[{"from": "human", "value": "Provide a brief overview of this molecule. [C][N][Branch1][=Branch1][C][=Branch1][C][=O][N][N][=O]"}, {"from": "gpt", "value": "The molecule is a member of the class of N-nitrosoureas that is urea in which one of the nitrogens is substituted by methyl and nitroso groups. It has a role as a carcinogenic agent, a mutagen, a teratogenic agent and an alkylating agent."}]