[{"from": "human", "value": "Could you provide a description of this molecule? [C][=C][C][=Branch2][Ring1][Branch1][=C][Branch1][P][C][=Branch1][=Branch2][=C][Ring1][=Branch1][C][=Branch1][C][=O][O][C][=Branch1][C][=O][O][O-1][O-1]"}, {"from": "gpt", "value": "The molecule is dicarboxylate anion of 3,4-dihydroxyphthalic acid; major species at pH 7.3. It is functionally related to a phthalate(2-). It is a conjugate base of a 3,4-dihydroxyphthalic acid."}]