0x5c11d795?0x5c11d795 is the function selector for swapExactTokensForTokensSupportingFeeOnTransferTokens(uint256,uint256,address[],address,uint256). Swap that tolerates fee-on-transfer tokens.
When a transaction's data begins with 0x5c11d795, it is calling swapExactTokensForTokensSupportingFeeOnTransferTokens. The selector is the first four bytes of the keccak-256 hash of the signature swapExactTokensForTokensSupportingFeeOnTransferTokens(uint256,uint256,address[],address,uint256), which is how wallets and explorers work out which function a payload is for.