[{"from": "human", "value": "Describe this molecule. [C][=C][C][=Branch1][#Branch1][=C][C][=C][Ring1][=Branch1][O][S][=Branch1][C][=O][=Branch1][C][=O][O]"}, {"from": "gpt", "value": "The molecule is an arenesulfonic acid that is phenol substituted by a sulfo group at C-4. It is functionally related to a phenol."}]