[{"from": "human", "value": "What can you tell me about this molecule? [C][C][O][C][C][N][Ring1][=Branch1][N][=O]"}, {"from": "gpt", "value": "The molecule is a yellow, crystalline nitrosamine that is sensitive to light. N-Nitrosomorpholine is not used or produced commercially in the US. This substance has been found as a contaminant in rubber products, including rubber nipples for baby bottles, and is also found in several vegetables, cheeses, alcoholic beverages and fruits. N-Nitrosomorpholine is reasonably anticipated to be a human carcinogen. (NCI05)"}]