Using CC(=O)Nc1cc(OC(C)=O)c(C(=O)NC2CCN(Cc3ccccc3)CC2)cc1[N+](=O)[O-] to produce CC(=O)Nc1cc(O)c(C(=O)NC2CCN(Cc3ccccc3)CC2)cc1[N+](=O)[O-], please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.