[{"from": "human", "value": "Provide a description of this molecule. [C][C][=Branch1][C][=O][O-1].[C][C][=Branch1][C][=O][O-1].[O-1][As][=O].[O-1][As][=O].[O-1][As][=O].[O-1][As][=O].[O-1][As][=O].[O-1][As][=O].[Cu+2].[Cu+2].[Cu+2].[Cu+2]"}, {"from": "gpt", "value": "The molecule appears as an emerald-green powder. Usually contains some water. Insoluble in water. Toxic by inhalation and by ingestion. Used as a wood preservative, insecticide, and pigment."}]