[{"from": "human", "value": "What reagents could have been utilized in the following chemical reaction? [Br][C][C][C][Br].[O][C][=C][C][=C][Branch1][C][F][C][=C][Ring1][#Branch1]>>[F][C][=C][C][=C][Branch1][=Branch1][O][C][C][C][Br][C][=C][Ring1][O]"}, {"from": "gpt", "value": "[C][C][#N].[O][=C][Branch1][C][O-1][O-1].[Cs+1].[Cs+1]"}]