[{"from": "human", "value": "Given the following chemical reaction, what are some potential reagents that could have been employed? [C][=O].[C][C@H1][C][N][Branch1][=C][C][=Branch1][C][=O][O][C][Branch1][C][C][Branch1][C][C][C][C][C][N][Ring1][=N]>>[C][C@H1][C][N][Branch1][=C][C][=Branch1][C][=O][O][C][Branch1][C][C][Branch1][C][C][C][C][C][N][Ring1][=N][C]"}, {"from": "gpt", "value": "[C][O].[O][=C][O]"}]