Using CC(C)(C)OC(=O)N1CCC(N)CC1, Nc1cc2c(cc1[N+](=O)[O-])C(=O)NC2=O to produce CC(C)(C)OC(=O)N1CCC(N2C(=O)c3cc(N)c([N+](=O)[O-])cc3C2=O)CC1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.