[{"from": "human", "value": "Generate a molecule based on the given description. The molecule is an organoarsenic compound. It has a role as a xenobiotic. It is functionally related to an acetic acid."}, {"from": "gpt", "value": "[C][Branch1][=Branch1][C][=Branch1][C][=O][O][As][=As][C][C][=Branch1][C][=O][O]"}]