[{"from": "human", "value": "What can you tell me about this molecule? [C][Branch2][Ring1][C][C][Branch1][#Branch2][C][Branch1][=Branch1][C][=Branch1][C][=O][O-1][O][C][=Branch1][C][=O][O-1][P+1][=Branch1][C][=O][O-1]"}, {"from": "gpt", "value": "The molecule is a dicarboxylic acid anion obtained by deprotonation of the carboxy and phosphino groups of phosphinomethylisomalic acid; major species at pH 7.3. It is a conjugate base of a phosphinomethylisomalic acid."}]