[{"from": "human", "value": "Please suggest some possible reagents that could have been used in the following chemical reaction. [C][C][=Branch1][C][=O][O][C][Branch1][C][C][=O].[C][C][C][C][N][C][C][C][Ring1][#Branch1][=O]>>[C][C][=Branch1][C][=O][N][C][C][C][=Branch1][C][=O][C][Branch1][C][C][C][C][Ring1][=Branch2]"}, {"from": "gpt", "value": "[Cl].[Cl][C][Cl].[C][=C][C][=N][C][=C][Ring1][=Branch1]"}]