[{"from": "human", "value": "Based on the given information, design a molecule that meets the desired specifications. The molecule is an alkylating antineoplastic agent no longer used in the United States, because it induces chromosomal aberration and causes cancer. (NCI)"}, {"from": "gpt", "value": "[C][=C][C][=C][C][=C][Branch1][=Branch2][C][=C][C][Ring1][=Branch1][=C][Ring1][#Branch2][N][Branch1][Ring2][C][C][Cl][C][C][Cl]"}]