[{"from": "human", "value": "Provide a brief overview of this molecule. [C][=C][C][=Branch1][#Branch1][=C][C][=C][Ring1][=Branch1][N][As][=Branch1][C][=O][Branch1][C][O][O]"}, {"from": "gpt", "value": "The molecule is an organoarsenic compound derived from orthoarsenic acid. It was once used as a human drug, but is now only found in veterinary medicine, where its use is controversial. (L386)"}]