[{"from": "human", "value": "Please propose potential reagents that might have been utilized in the provided chemical reaction. [C][C][=Branch1][C][=O][C][N][N][=C][Branch1][=Branch1][N+1][=Branch1][C][=O][O-1][C][=C][Ring1][Branch2][C]>>[C][C][=C][C][Branch1][=Branch1][N+1][=Branch1][C][=O][O-1][=N][N][Ring1][Branch2][C][C][Branch1][C][C][O]"}, {"from": "gpt", "value": "[C][C][O].[BH4-1].[Na+1]"}]