[{"from": "human", "value": "Based on the given chemical reaction, suggest some possible reagents. [Br][Br].[C][C][Branch1][C][C][C][=C][C][=C][C][=C][Ring1][=Branch1][N]>>[C][C][Branch1][C][C][C][=C][C][Branch1][C][Br][=C][C][=C][Ring1][#Branch1][N]"}, {"from": "gpt", "value": "[Cl][C][Cl]"}]