[{"from": "human", "value": "Can you suggest some reagents that might have been used in the given chemical reaction? [C][O][C][=Branch1][C][=O][C][=C][C][=C][Branch1][C][I][C][Branch1][C][Br][=C][Ring1][Branch2]>>[O][C][C][=C][C][=C][Branch1][C][I][C][Branch1][C][Br][=C][Ring1][Branch2]"}, {"from": "gpt", "value": "[C][C][C][O][C][Ring1][Branch1].[BH4-1].[Li+1]"}]