Using O=[N+]([O-])c1ccc(Oc2cc(F)c(C(F)(F)F)c(Cl)c2)cc1[N+](=O)[O-], COc1ccc(O)cc1 to produce COc1ccc(Oc2cc(Oc3cc(F)c(C(F)(F)F)c(Cl)c3)ccc2[N+](=O)[O-])cc1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.