[{"from": "human", "value": "Could you provide a description of this molecule? [O-1][As][=Branch1][C][=O][Branch1][C][O-1][O-1].[Fe+3]"}, {"from": "gpt", "value": "The molecule is a green or brown powder. It is insoluble in water. It is toxic by ingestion and inhalation and is a strong irritant. It is used in the manufacture of insecticides."}]