[{"from": "human", "value": "Could you provide a description of this molecule? [C][C][=Branch1][C][=O][O-1].[C][C][=Branch1][C][=O][O-1].[Pb+2]"}, {"from": "gpt", "value": "The molecule appears as a white to gray crystalline solid. Denser than water. Contact may irritate skin, eyes and mucous membranes. May be toxic by inhalation, ingestion, and skin absorption. Used in dyes, waterproofing, insecticides, antifouling paints, hair dyes and many other processes."}]