[{"from": "human", "value": "What reagents could have been utilized in the following chemical reaction? [C][C][O][C][=C][C][Branch1][N][C][Branch1][C][N][C][C][=Branch1][C][=O][O][C][=C][C][=C][Ring1][=N][O][C]>>[C][C][O][C][=C][C][Branch1][Branch2][C][Branch1][C][N][C][C][O][=C][C][=C][Ring1][O][O][C]"}, {"from": "gpt", "value": "[C][O].[BH4-1].[Na+1]"}]