[{"from": "human", "value": "Please provide possible reagents based on the following chemical reaction. [N][C][C][C][C][C][C][C][N].[O][=C][Branch1][C][Cl][O][C][C][=C][C][=C][C][=C][Ring1][=Branch1]>>[N][C][C][C][C][C][C][C][N][C][=Branch1][C][=O][O][C][C][=C][C][=C][C][=C][Ring1][=Branch1]"}, {"from": "gpt", "value": "[C][O].[Cl][C][Cl].[Cl][C][Cl]"}]