Using NO, CN1C(=O)N(C)C(O)(c2ccccc2)c2cc(Cl)ccc21 to produce Cn1c(=O)[n+]([O-])c(-c2ccccc2)c2cc(Cl)ccc21, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.