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