[{"from": "human", "value": "Could you provide a description of this molecule? [C][C][=Branch1][C][=O][O].[C][C][=Branch1][C][=O][O].[O][=U][=O]"}, {"from": "gpt", "value": "The molecule appears as yellow crystals with a slight odor of vinegar. Density 2.89 g / cm3."}]