[{"from": "human", "value": "Please suggest some possible reagents that could have been used in the following chemical reaction. [C][O][C][=Branch1][C][=O][C@@H1][C][C][C][N][Ring1][Branch1][C][=Branch1][C][=O][C][N][C][C][C][C][Ring1][Branch1][=O]>>[O][=C][Branch1][C][O][C@@H1][C][C][C][N][Ring1][Branch1][C][=Branch1][C][=O][C][N][C][C][C][C][Ring1][Branch1][=O]"}, {"from": "gpt", "value": "[C][O].[Cl].[Na+1].[OH1-1]"}]