[{"from": "human", "value": "Provide a description of this molecule. [Li+1].[Li+1].[O-1][Cr][=Branch1][C][=O][=Branch1][C][=O][O][Cr][=Branch1][C][=O][=Branch1][C][=O][O-1]"}, {"from": "gpt", "value": "The molecule is an orange red to black brown crystalline powder. Denser than water. (USCG, 1999)"}]