Using O=[N+]([O-])c1c[nH]c(Cl)n1, CC(C)(C)OC(=O)N1CCN(CC2(C)CO2)CC1 to produce CC(C)(C)OC(=O)N1CCN(CC2(C)Cn3cc([N+](=O)[O-])nc3O2)CC1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.