[{"from": "human", "value": "Given the following reaction, what are some possible reagents that could have been utilized? [C][C][O][C][=Branch1][C][=O][Cl].[N][C][=C][C][=C][C][=C][Ring1][=Branch1][Cl]>>[C][C][O][C][=Branch1][C][=O][N][C][=C][C][=C][C][=C][Ring1][=Branch1][Cl]"}, {"from": "gpt", "value": "[Cl].[C][=C][C][=N][C][=C][Ring1][=Branch1]"}]