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