[{"from": "human", "value": "Could you provide a description of this molecule? [C][=C][Branch2][Ring1][C][C][=Branch1][#Branch2][=C][C][=Branch1][Branch1][=C][Ring1][=Branch1][O-1][O-1][C][=Branch1][C][=O][O][C][=Branch1][C][=O][O]"}, {"from": "gpt", "value": "The molecule is dicarboxylate anion of 4,5-dihydroxyphthalic acid; major species at pH 7.3. It is a conjugate base of a 4,5-dihydroxyphthalic acid."}]