Using BrCc1ccccc1, O=C1CC(C(F)(F)F)=Nc2ccccc2N1 to produce O=C1C(Cc2ccccc2)C(C(F)(F)F)=Nc2ccccc2N1Cc1ccccc1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.