[{"from": "human", "value": "Provide a description of this molecule. [C][C][=Branch1][C][=O][O-1].[C][C][=Branch1][C][=O][O-1].[O].[O].[O].[Pb+2]"}, {"from": "gpt", "value": "The molecule appears as white powder or white chunky solid. Slight odor. pH (5% aqueous solution at 77 \u00b0F) 5.5-6.5. "}]