[{"from": "human", "value": "Provide a description of this molecule. [O-1][As][=Branch1][C][=O][Branch1][C][O-1][O-1].[O-1][As][=Branch1][C][=O][Branch1][C][O-1][O-1].[Mg+2].[Mg+2].[Mg+2]"}, {"from": "gpt", "value": "The molecule appears as a white crystals or powder when pure. Insoluble in water. Very toxic by inhalation and ingestion. Used as an insecticide."}]