[{"from": "human", "value": "Based on the given chemical reaction, suggest some possible reagents. [Br][C][=C][C][=C][C][=C][Ring1][=Branch1].[O][=C][Branch1][C][Cl][C][C][Br]>>[O][=C][Branch1][Ring2][C][C][Br][C][=C][C][=C][Branch1][C][Br][C][=C][Ring1][#Branch1]"}, {"from": "gpt", "value": "[Al+3].[Cl-1].[Cl-1].[Cl-1]"}]