[{"from": "human", "value": "Generate a molecule based on this description. The molecule is a sulfonamide consisting of butanoic acid with a 4-aminobenzenesulfonamido group at its 4-position. It has a role as a hapten. It is a sulfonamide and a monocarboxylic acid."}, {"from": "gpt", "value": "[C][=C][C][=Branch1][#Branch1][=C][C][=C][Ring1][=Branch1][N][S][=Branch1][C][=O][=Branch1][C][=O][N][C][C][C][C][=Branch1][C][=O][O]"}]