[{"from": "human", "value": "Please give me some details about this molecule. [C][C][N][Branch1][=Branch1][C][=Branch1][C][=O][N][N][=O]"}, {"from": "gpt", "value": "The molecule is a nitrosourea with potential antineoplastic activity.  Used experimentally as a mutagen and carcinogen, ethylnitrosourea alkylates DNA and proteins, thereby damaging DNA and inducing point mutations. (NCI04)"}]