Parsing browser/ballot.sol:102:18:parserror:Expected'；{'；但得到的标识符契约令牌是ERC20Interface，Owned，SafeMath{^----^

我在尝试编译时收到错误消息

ParserError: Expected '{' but got identifier
contract token is ERC20Interface, Owned, SafeMath { 
                 ^----^

在代码的第102行

pragma solidity ^0.4.19;

   // -------------------------------------------------------------------- 
   --------
   // 'reSTEEM Reward token' token contract
   //
   // Deployed to : 0xC03fBB28Ce8280B97ecFa7b9a62112d507BA4c0a
   // Symbol      : rRt
   // Name        : reSTEEM Reward token
   // Total supply: 300000000000000000000000
   // Decimals    : 18
   //
  //
// (c) by Moritz Neto with BokkyPooBah / Bok Consulting Pty Ltd Au 2017. The MIT Licence.
// ----------------------------------------------------------------------------


// ----------------------------------------------------------------------------
// Safe maths
// ----------------------------------------------------------------------------
contract SafeMath {
    function safeAdd(uint a, uint b) public pure returns (uint c) {
        c = a + b;
        require(c >= a);
    }
    function safeSub(uint a, uint b) public pure returns (uint c) {
        require(b <= a);
        c = a - b;
    }
    function safeMul(uint a, uint b) public pure returns (uint c) {
        c = a * b;
        require(a == 0 || c / a == b);
    }
    function safeDiv(uint a, uint b) public pure returns (uint c) {
        require(b > 0);
        c = a / b;
    }
}


// ----------------------------------------------------------------------------
// ERC Token Standard #20 Interface
// https://github.com/ethereum/EIPs/blob/master/EIPS/eip-20-token-standard.md
// ----------------------------------------------------------------------------
contract ERC20Interface {
    function totalSupply() public constant returns (uint);
    function balanceOf(address tokenOwner) public constant returns (uint balance);
    function allowance(address tokenOwner, address spender) public constant returns (uint remaining);
    function transfer(address to, uint tokens) public returns (bool success);
    function approve(address spender, uint tokens) public returns (bool success);
    function transferFrom(address from, address to, uint tokens) public returns (bool success);

    event Transfer(address indexed from, address indexed to, uint tokens);
    event Approval(address indexed tokenOwner, address indexed spender, uint tokens);
}


// ----------------------------------------------------------------------------
// Contract function to receive approval and execute function in one call
//
// Borrowed from MiniMeToken
// ----------------------------------------------------------------------------
contract ApproveAndCallFallBack {
    function receiveApproval(address from, uint256 tokens, address token, bytes data) public;
}


// ----------------------------------------------------------------------------
// Owned contract
// ----------------------------------------------------------------------------
contract Owned {
    address public owner;
    address public newOwner;

    event OwnershipTransferred(address indexed _from, address indexed _to);

    function Owned() public {
        owner = msg.sender;
    }

    modifier onlyOwner {
        require(msg.sender == owner);
        _;
    }

    function transferOwnership(address _newOwner) public onlyOwner {
        newOwner = _newOwner;
    }
    function acceptOwnership() public {
        require(msg.sender == newOwner);
        OwnershipTransferred(owner, newOwner);
        owner = newOwner;
        newOwner = address(0);
    }
}


// ----------------------------------------------------------------------------
// ERC20 Token, with the addition of symbol, name and decimals and assisted
// token transfers
// ----------------------------------------------------------------------------
contract reSTEEM Reward token is ERC20Interface, Owned, SafeMath {
    string public symbol;
    string public  name;
    uint8 public decimals;
    uint public _totalSupply;

    mapping(address => uint) balances;
    mapping(address => mapping(address => uint)) allowed;


    // ------------------------------------------------------------------------
    // Constructor
    // ------------------------------------------------------------------------
    function reSTEEM Reward token() public {
        symbol = "rRt";
        name = "reSTEEM Reward token";
        decimals = 18;
        _totalSupply = 300000000000000000000000;
        balances[0xC03fBB28Ce8280B97ecFa7b9a62112d507BA4c0a] = _totalSupply;
        Transfer(address(0), 0xC03fBB28Ce8280B97ecFa7b9a62112d507BA4c0a, _totalSupply);
    }


    // ------------------------------------------------------------------------
    // Total supply
    // ------------------------------------------------------------------------
    function totalSupply() public constant returns (uint) {
        return _totalSupply  - balances[address(0)];
    }


    // ------------------------------------------------------------------------
    // Get the token balance for account tokenOwner
    // ------------------------------------------------------------------------
    function balanceOf(address tokenOwner) public constant returns (uint balance) {
        return balances[tokenOwner];
    }


    // ------------------------------------------------------------------------
    // Transfer the balance from token owner's account to to account
    // - Owner's account must have sufficient balance to transfer
    // - 0 value transfers are allowed
    // ------------------------------------------------------------------------
    function transfer(address to, uint tokens) public returns (bool success) {
        balances[msg.sender] = safeSub(balances[msg.sender], tokens);
        balances[to] = safeAdd(balances[to], tokens);
        Transfer(msg.sender, to, tokens);
        return true;
    }


    // ------------------------------------------------------------------------
    // Token owner can approve for spender to transferFrom(...) tokens
    // from the token owner's account
    //
    // https://github.com/ethereum/EIPs/blob/master/EIPS/eip-20-token-standard.md
    // recommends that there are no checks for the approval double-spend attack
    // as this should be implemented in user interfaces 
    // ------------------------------------------------------------------------
    function approve(address spender, uint tokens) public returns (bool success) {
        allowed[msg.sender][spender] = tokens;
        Approval(msg.sender, spender, tokens);
        return true;
    }


    // ------------------------------------------------------------------------
    // Transfer tokens from the from account to the to account
    // 
    // The calling account must already have sufficient tokens approve(...)-d
    // for spending from the from account and
    // - From account must have sufficient balance to transfer
    // - Spender must have sufficient allowance to transfer
    // - 0 value transfers are allowed
    // ------------------------------------------------------------------------
    function transferFrom(address from, address to, uint tokens) public returns (bool success) {
        balances[from] = safeSub(balances[from], tokens);
        allowed[from][msg.sender] = safeSub(allowed[from][msg.sender], tokens);
        balances[to] = safeAdd(balances[to], tokens);
        Transfer(from, to, tokens);
        return true;
    }


    // ------------------------------------------------------------------------
    // Returns the amount of tokens approved by the owner that can be
    // transferred to the spender's account
    // ------------------------------------------------------------------------
    function allowance(address tokenOwner, address spender) public constant returns (uint remaining) {
        return allowed[tokenOwner][spender];
    }


    // ------------------------------------------------------------------------
    // Token owner can approve for spender to transferFrom(...) tokens
    // from the token owner's account. The spender contract function
    // receiveApproval(...) is then executed
    // ------------------------------------------------------------------------
    function approveAndCall(address spender, uint tokens, bytes data) public returns (bool success) {
        allowed[msg.sender][spender] = tokens;
        Approval(msg.sender, spender, tokens);
        ApproveAndCallFallBack(spender).receiveApproval(msg.sender, tokens, this, data);
        return true;
    }


    // ------------------------------------------------------------------------
    // Don't accept ETH
    // ------------------------------------------------------------------------
    function () public payable {
        revert();
    }


    // ------------------------------------------------------------------------
    // Owner can transfer out any accidentally sent ERC20 tokens
    // ------------------------------------------------------------------------
    function transferAnyERC20Token(address tokenAddress, uint tokens) public onlyOwner returns (bool success) {
        return ERC20Interface(tokenAddress).transfer(owner, tokens);
    }
}

pragma-solidity^0.4.19；
// -------------------------------------------------------------------- 
--------
//“reSTEEM奖励代币”代币合同
//
//部署到：0xC03fBB28Ce8280B97ecFa7b9a62112d507BA4c0a
//符号:rRt
//名称：reSTEEM奖励令牌
//总供应量：3000000000000
//小数：18
//
//
//（c）由Moritz Neto与BokkyPooBah/Bok Consulting Pty Ltd于2017年在Au签订。麻省理工学院许可证。
// ----------------------------------------------------------------------------
// ----------------------------------------------------------------------------
//安全数学
// ----------------------------------------------------------------------------
合同安全数学{
函数safeAdd（uint a，uint b）公共纯返回（uint c）{
c=a+b；
要求（c>=a）；
}
函数safeSub（uint a，uint b）公共纯返回（uint c）{
要求（b0）；
c=a/b；
}
}
// ----------------------------------------------------------------------------
//ERC令牌标准#20接口
// https://github.com/ethereum/EIPs/blob/master/EIPS/eip-20-token-standard.md
// ----------------------------------------------------------------------------
合同接口{
函数totalSupply（）公共常量返回（uint）；
函数余额（地址令牌所有者）公共常量返回（uint余额）；
功能津贴（地址令牌所有者、地址支出者）公共固定收益（剩余uint）；
函数传输（地址到，uint令牌）公共返回（bool成功）；
职能部门批准（地址支出者、uint代币）公共返还（bool成功）；
函数transferFrom（地址from、地址to、uint令牌）公共返回（bool success）；
事件传输（地址索引自、地址索引至、uint令牌）；
事件批准（地址索引令牌所有者、地址索引支出者、uint令牌）；
}
// ----------------------------------------------------------------------------
//合同功能在一次调用中接收批准并执行功能
//
//从MiniMeToken借来的
// ----------------------------------------------------------------------------
合同批准和回退{
功能接收批准（地址来源、uint256令牌、地址令牌、字节数据）公共；
}
// ----------------------------------------------------------------------------
//自有合同
// ----------------------------------------------------------------------------
合同所有{
向公众所有人致辞；
向公众发表演说；
事件所有权转移（地址索引从，地址索引到）；
函数Owned（）public{
所有者=msg.sender；
}
仅修改器所有者{
要求（msg.sender==所有者）；
_;
}
功能转移所有权（地址_newOwner）仅限公共所有者{
newOwner=_newOwner；
}
函数acceptOwnership（）public{
require（msg.sender==newOwner）；
所有权转让（所有者、新所有者）；
所有者=新所有者；
newOwner=地址（0）；
}
}
// ----------------------------------------------------------------------------
//ERC20令牌，添加符号、名称和小数，并辅助
//代币转账
// ----------------------------------------------------------------------------
合同恢复期奖励令牌为ERC20Interface，拥有，SafeMath{
字符串公共符号；
字符串公共名称；
uint8公共小数；
单位公共总供给；
映射（地址=>uint）余额；
允许映射（地址=>mapping（地址=>uint））；
// ------------------------------------------------------------------------
//建造师
// ------------------------------------------------------------------------
函数reSTEEM Reward token（）public{
symbol=“rRt”；
name=“reSTEEM奖励令牌”；
小数=18；
_总供应量=3000000000000000000；
余额[0xC03FBB28CE8280B97ECFA7B9A621212D507BA4C0A]=总供应量；
传输（地址（0），0xC03fBB28Ce8280B97ecFa7b9a62112d507BA4c0a，总电源）；
}
// ------------------------------------------------------------------------
//总供给
// ------------------------------------------------------------------------
函数totalSupply（）公共常量返回（uint）{
返回_totalSupply-余额[地址（0）]；
}
// ------------------------------------------------------------------------
//获取帐户令牌所有者的令牌余额
// ------------------------------------------------------------------------
函数余额（地址令牌所有者）公共常量返回（uint余额）{
返回余额[令牌所有者]；
}
// ------------------------------------------------------------------------
//将令牌所有者帐户的余额转移到令牌所有者帐户
//-业主账户必须有足够的余额进行转账
//允许-0值传输
// ------------------------------------------------------------------------
函数传输（地址到，uint令牌）公共返回（bool成功）{
余额[msg.sender]=safeSub（余额[msg.sender]，令牌）；
余额[至]=安全添加（余额[至]、代币）；
转账（msg.sender、to、tokens）；
返回true；
}
// ------------------------------------------------------------------------
//令牌所有者可以批准spender从（…）令牌转移
//来自令牌所有者的帐户
//
// https://github.com/ethereum/EIPs/blob/master/EIPS/eip-20-token-standard.md
//建议不检查批准双倍支出攻击
//因为这是
browser/Untitled3.sol:101:18: ParserError: Expected '{' but got identifier
contract reSTEEM Reward token is ERC20Interface, Owned, SafeMath {
                 ^----^

contract reSTEEMRewardToken is ...