[{"from": "human", "value": "Please provide possible reagents based on the following chemical reaction. [C][=C][C][C][C][=C][C][=C][C][Branch1][Ring1][C][=O][=C][Ring1][Branch2]>>[C][=C][C][C][C][=C][C][=C][C][Branch1][Ring1][C][O][=C][Ring1][Branch2]"}, {"from": "gpt", "value": "[C][O].[BH4-1].[Na+1]"}]