Using CC(C)(C)OC(=O)N1CCN(c2ccc(Oc3cc(Cl)ccc3[N+](=O)[O-])cc2)CC1 to produce CC(C)(C)OC(=O)N1CCN(c2ccc(Oc3cc(Cl)ccc3N)cc2)CC1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.