add bsc chain BNB in ETHER

[1500256797]

prev does not contian BNB on BSC chain,chainId is 56 . var WETH9 = (_WETH = {}, _WETH[1] = /*#__PURE__*/new Token(1, '0xC02aaA39b223FE8D0A0e5C4F27eAD9083C756Cc2', 18, 'WETH', 'Wrapped Ether'), _WETH[3] = /*#__PURE__*/new Token(3, '0xc778417E063141139Fce010982780140Aa0cD5Ab', 18, 'WETH', 'Wrapped Ether'), _WETH[4] = /*#__PURE__*/new Token(4, '0xc778417E063141139Fce010982780140Aa0cD5Ab', 18, 'WETH', 'Wrapped Ether'), _WETH[5] = /*#__PURE__*/new Token(5, '0xB4FBF271143F4FBf7B91A5ded31805e42b2208d6', 18, 'WETH', 'Wrapped Ether'), _WETH[42] = /*#__PURE__*/new Token(42, '0xd0A1E359811322d97991E03f863a0C30C2cF029C', 18, 'WETH', 'Wrapped Ether'), _WETH[10] = /*#__PURE__*/new Token(10, '0x4200000000000000000000000000000000000006', 18, 'WETH', 'Wrapped Ether'), _WETH[69] = /*#__PURE__*/new Token(69, '0x4200000000000000000000000000000000000006', 18, 'WETH', 'Wrapped Ether'), _WETH[42161] = /*#__PURE__*/new Token(42161, '0x82aF49447D8a07e3bd95BD0d56f35241523fBab1', 18, 'WETH', 'Wrapped Ether'), _WETH[421611] = /*#__PURE__*/new Token(421611, '0xB47e6A5f8b33b3F17603C83a0535A9dcD7E32681', 18, 'WETH', 'Wrapped Ether'), _WETH); should add WETH on BSC chain . this is wbnb url : https://bscscan.com/address/0xbb4cdb9cbd36b01bd1cbaebf2de08d9173bc095c#readContract