Using CC(=O)OCC1CC(Nc2cc(Cl)c(Cl)cc2[N+](=O)[O-])C(OC(C)=O)C1OC(C)=O to produce CC(=O)OCC1CC(Nc2cc(Cl)c(Cl)cc2N)C(OC(C)=O)C1OC(C)=O, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.