Using CC(C)(C)OC(=O)N1CCN(C2CCc3cc4c(cc3C2)no[n+]4[O-])CC1 to produce CC(C)(C)OC(=O)N1CCN(C2CCc3cc4nonc4cc3C2)CC1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.