[{"from": "human", "value": "Please propose potential reagents that might have been utilized in the provided chemical reaction. [Br][Br].[N][C][=C][Branch1][C][F][C][=C][C][=C][Ring1][#Branch1][F]>>[N][C][=C][Branch1][C][F][C][=C][Branch1][C][Br][C][=C][Ring1][Branch2][F]"}, {"from": "gpt", "value": "[Cl][C][Branch1][C][Cl][Cl].[C][=C][C][=N][C][=C][Ring1][=Branch1]"}]