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