[{"from": "human", "value": "Could you provide a description of this molecule? [O-1][Cr][=Branch1][C][=O][=Branch1][C][=O][O-1].[Ni+2]"}, {"from": "gpt", "value": "The molecule is a chemical compound of nickel and chromium. Nickel is a chemical compound with the atomic number 28. It is found abundantly in nature in laterite ore minerals, such as limonite, garnierite, and pentlandite. Nickel has a biological role and is found in certain enzymes, including urease, hydrogenase, methylcoenzyme M reductase, and carbon monoxide dehydrogenase. 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, L40, L41)"}]