[{"from": "human", "value": "Could you give me a brief overview of this molecule? [O].[O].[O].[O].[O].[O-2].[O][As][Branch1][C][O][O].[Fe+3]"}, {"from": "gpt", "value": "The molecule appears as a yellow-brown powder. Insoluble in water. Toxic by ingestion and inhalation and is a strong irritant. It is used in medicines."}]