[{"from": "human", "value": "Given the following reaction, what are some possible reagents that could have been utilized? [O][=C][Branch1][C][O][C][=C][C][Branch1][C][O][=C][C][Branch1][C][Br][=C][Ring1][Branch2]>>[O][C][C][=C][C][Branch1][C][O][=C][C][Branch1][C][Br][=C][Ring1][Branch2]"}, {"from": "gpt", "value": "[C][C][C][O][C][Ring1][Branch1].[Cl].[Al+3].[H-1].[H-1].[H-1].[H-1].[Li+1]"}]