[{"from": "human", "value": "Could you provide a description of this molecule? [O-1][W][=Branch1][C][=O][=Branch1][C][=O][O-1].[Pb+2]"}, {"from": "gpt", "value": "The molecule is a white to pale yellow powdery solid. Sinks in water. (USCG, 1999)"}]