[{"from": "human", "value": "Given the following chemical reaction, what are some potential reagents that could have been employed? [O][=C][C][=C][C][=C][Branch1][=Branch2][N][C][C][O][C][C][Ring1][=Branch1][C][=C][Ring1][N][O]>>[O][C][C][=C][C][=C][Branch1][=Branch2][N][C][C][O][C][C][Ring1][=Branch1][C][=C][Ring1][N][O]"}, {"from": "gpt", "value": "[C][C][Branch1][C][C][=O].[Cl].[O].[BH4-1].[Na+1]"}]