[{"from": "human", "value": "Describe this molecule. [O-1][Cr][=Branch1][C][=O][=Branch1][C][=O][O-1].[K+1].[K+1]"}, {"from": "gpt", "value": "The molecule is a chemical compound of potassium  and hexavalent chromium. It is found naturally as the mineral tarapacaite and is used as a chemical indicator of chlorine ions. Hexavalent chromium refers to chemical compounds that contain the element chromium in the +6 oxidation state. Chromium(VI) is more toxic than other oxidation states of the chromium atom because of its greater ability to enter cells and higher redox potential. (L16, L54)"}]