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