[{"from": "human", "value": "Can you suggest some reagents that might have been used in the given chemical reaction? [Br][Br].[O][=C][C][C][C][=C][C][=C][C][=C][Ring1][=Branch1][Ring1][=Branch2]>>[O][=C][C][C][C][=C][C][=C][Branch1][C][Br][C][=C][Ring1][#Branch1][Ring1][#Branch2]"}, {"from": "gpt", "value": "[Cl].[Al+3].[Cl-1].[Cl-1].[Cl-1]"}]