[{"from": "human", "value": "Could you give me a brief overview of this molecule? [C][As][=Branch1][C][=O][Branch1][C][O][O-1]"}, {"from": "gpt", "value": "The molecule is an organoarsonic acid anion. It is a conjugate base of a methylarsonic acid. It is a conjugate acid of a methylarsonate(2-)."}]