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