Using Nc1cc(F)cc(F)c1, O=[N+]([O-])c1ccc(Cl)cc1F to produce O=[N+]([O-])c1ccc(Cl)cc1Nc1cc(F)cc(F)c1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.