Using Oc1ccnc(Cl)c1, O=[N+]([O-])c1cc(F)c(F)cc1F to produce O=[N+]([O-])c1cc(F)c(Oc2ccnc(Cl)c2)cc1F, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.