function  ERC20MIST (
        uint256 initialSupply,
        string tokenName,
        string tokenSymbol
    ) public {
        totalSupply = initialSupply * 8 ** uint256(decimals);  
        balanceOf[msg.sender] = 2100000000000000;                
        name = tokenName="ERC20_MIST";                                   
        symbol = tokenSymbol="MSI";                               
    }