[{"from": "human", "value": "Given the following chemical reaction, what are some potential reagents that could have been employed? [O][=C][Branch1][C][Cl][C][Cl].[O][C][C][C][=C][C][=C][C][=C][Ring1][=Branch1]>>[O][=C][Branch1][Ring1][C][Cl][C][=C][C][=C][Branch1][Ring2][C][C][O][C][=C][Ring1][=Branch2]"}, {"from": "gpt", "value": "[Cl][C][Cl].[Al+3].[Cl-1].[Cl-1].[Cl-1]"}]