Using Cc1c(F)c(F)nc(F)c1F, FC(F)(F)c1ccc(Br)cc1 to produce Cc1c(F)c(F)nc(-c2ccc(C(F)(F)F)cc2)c1F, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.