Using CC(C)(C)OC(=O)N1CCN(CC(=O)N2CCC3(CC2)CO3)CC1, O=[N+]([O-])c1c[nH]c(Cl)n1 to produce CC(C)(C)OC(=O)N1CCN(CC(=O)N2CCC(O)(Cn3cc([N+](=O)[O-])nc3Cl)CC2)CC1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.