[{"from": "human", "value": "Based on the given information, design a molecule that meets the desired specifications. Toxic alkylating agent used in industry; also as antineoplastic and research tool to produce chromosome aberrations and cancers."}, {"from": "gpt", "value": "[C][C][N][Ring1][Ring1][C][=N][C][=Branch1][=N][=N][C][=Branch1][Ring2][=N][Ring1][=Branch1][N][C][C][Ring1][Ring1][N][C][C][Ring1][Ring1]"}]