[{"from": "human", "value": "Generate a molecule based on the given description. The molecule is a chloroethylnitrosourea derivative that inhibits proliferation and growth of tumor cells by alkylation and cross-linkage of DNA strands of tumor cells. (NCI)"}, {"from": "gpt", "value": "[C][O][C@@H1][C@@H1][Branch2][Ring1][#C][C@H1][Branch2][Ring1][#Branch2][C@@H1][Branch2][Ring1][Branch1][C@H1][Branch1][Ring2][O][Ring1][=Branch1][C][N][C][=Branch1][C][=O][N][Branch1][Ring2][C][C][Cl][N][=O][O][O][O]"}]