[{"from": "human", "value": "Provide a brief overview of this molecule. [C][Branch1][=Branch1][C][=Branch1][C][=O][O-1][C][Branch1][#Branch1][C][P+1][=Branch1][C][=O][O-1][Branch1][=Branch1][C][=Branch1][C][=O][O-1][O]"}, {"from": "gpt", "value": "The molecule is a dicarboxylic acid anion obtained by deprotonation of the carboxy and phosphino group of phosphinomethylmalic acid. It is a conjugate base of a 2-phosphinomethylmalic acid."}]