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