[{"from": "human", "value": "Describe this molecule. [O][O].[O][=U][=O]"}, {"from": "gpt", "value": "The molecule is a pale-yellow, soluble peroxide of uranium. It is found to be present at one stage of the enriched uranium fuel cycle and in yellowcake prepared via the in situ leaching and resin ion exchange system. It is confirmed human carcinogen. "}]