Using CC(C)(C)OC(=O)C1(O)CC1, O=[N+]([O-])c1cc(Cl)cnc1Cl to produce CC(C)(C)OC(=O)C1(Oc2ncc(Cl)cc2[N+](=O)[O-])CC1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.