[{"from": "human", "value": "Please give me some details about this molecule. [O-1][Cr][=Branch1][C][=O][=Branch1][C][=O][O-1].[Pb+2]"}, {"from": "gpt", "value": "The molecule appears as yellow or orange-yellow powder. One of the most insoluble salts. Basic lead chromates are used as pigments. "}]