function allowance(address owner, address spender) view returns (uint256)

function balanceOf(address account) view returns (uint256)

function collateralAsset() view returns (address)

function controller() view returns (address)

function decimals() view returns (uint8)

function DOMAIN_SEPARATOR() view returns (bytes32)

function expiryTimestamp() view returns (uint256)

function getOtokenDetails() view returns (address, address, address, uint256, uint256, bool)

function isPut() view returns (bool)

function name() view returns (string)

function nonces(address owner) view returns (uint256)

function strikeAsset() view returns (address)

function strikePrice() view returns (uint256)

function symbol() view returns (string)

function totalSupply() view returns (uint256)

function underlyingAsset() view returns (address)

function approve(address spender, uint256 amount) returns (bool)

function burnOtoken(address account, uint256 amount)

function decreaseAllowance(address spender, uint256 subtractedValue) returns (bool)

function increaseAllowance(address spender, uint256 addedValue) returns (bool)

function init(address _addressBook, address _underlyingAsset, address _strikeAsset, address _collateralAsset, uint256 _strikePrice, uint256 _expiryTimestamp, bool _isPut)

function mintOtoken(address account, uint256 amount)

function permit(address owner, address spender, uint256 amount, uint256 deadline, uint8 v, bytes32 r, bytes32 s)

function transfer(address recipient, uint256 amount) returns (bool)

function transferFrom(address sender, address recipient, uint256 amount) returns (bool)

event Approval(address indexed owner, address indexed spender, uint256 value)

event Transfer(address indexed from, address indexed to, uint256 value)