[{"from": "human", "value": "Please suggest some possible reagents that could have been used in the following chemical reaction. [C][O][C][C][C][N][N][=C][C][=C][C][=C][Branch1][#Branch1][C][=Branch1][C][=O][O][C][C][=C][Ring1][#Branch2][Ring1][=N]>>[C][O][C][C][C][N][N][=C][C][=C][C][=C][Branch1][Ring1][C][O][C][=C][Ring1][Branch2][Ring1][O]"}, {"from": "gpt", "value": "[C][O].[BH4-1].[Na+1]"}]