//internal membersbytes32 internal constant INVESTORSKEY;mapping(bytes32 =>mapping(bytes32 => string)) internal oracleKeys;contract IERC20[] internal usdTokens;mapping(address => bool) internal usdTokenEnabled;mapping(bytes32 =>mapping(bytes32 => address)) internal customOracles;//public membersmapping(address => uint256) public nonAccreditedLimitUSDOverride;bool public allowBeneficialInvestments;bool public isFinalized;address public treasuryWallet;uint256 public currentTier;uint256 public fundsRaisedUSD;mapping(address => uint256) public stableCoinsRaised;mapping(address => uint256) public investorInvestedUSD;mapping(address =>mapping(uint8 => uint256)) public investorInvested;uint256 public nonAccreditedLimitUSD;uint256 public minimumInvestmentUSD;uint256 public finalAmountReturned;struct USDTieredSTOStorage.Tier[] public tiers;