Using O=[N+]([O-])c1ccc(F)c(F)c1F, Oc1c(F)cccc1F to produce O=[N+]([O-])c1ccc(Oc2c(F)cccc2F)c(F)c1F, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.