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