[{"from": "human", "value": "What can you tell me about this molecule? [C][Branch1][=Branch1][C][=Branch1][C][=O][O][As][=Branch1][C][=O][Branch1][C][O][O]"}, {"from": "gpt", "value": "The molecule is an organoarsonic acid that is methylarsonic acid in which one of the hydrogens of the methyl group is replaced by a carboxy group. It is an organoarsonic acid and a monocarboxylic acid. It is a conjugate acid of an arsonoacetic acid anion."}]