Using CC(=O)Nc1cc(Br)c(OC(F)(F)C(F)C(F)(F)F)c(C(F)(F)F)c1 to produce Nc1cc(Br)c(OC(F)(F)C(F)C(F)(F)F)c(C(F)(F)F)c1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.