[{"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 nitrosamine that is morpholine in which the hydrogen attached to the nitrogen is replaced by a nitroso group. A carcinogen and mutagen, it is found in snuff tobacco. It has a role as a carcinogenic agent and a mutagen."}]