[{"from": "human", "value": "Based on the given chemical reaction, suggest some possible reagents. [C][O][C][=C][C][Branch1][C][Cl][=C][C][Branch1][Ring1][C][=O][=C][Ring1][=Branch2]>>[C][O][C][=C][C][Branch1][C][Cl][=C][C][Branch1][Ring1][C][O][=C][Ring1][=Branch2]"}, {"from": "gpt", "value": "[C][C][O].[Cl].[BH4-1].[H][H].[Na+1]"}]