[{"from": "human", "value": "Could you give me a brief overview of this molecule? [O-1][Cr][=Branch1][C][=O][=Branch1][C][=O][O-1].[O][=Pb].[Pb+2]"}, {"from": "gpt", "value": "The molecule is an orange pigment which consists of lead(II) chromate and lead(II) oxide. (PbCrO4 and PbO). Chrome orange can be made by precipitating lead(II) together with chromate in a basic solution or by treating chrome yellow with lye. It is toxic both from the contained lead and from the contained hexavalent chromium."}]