Using COC(=O)C(C)Oc1noc2cc(Cl)ccc12, O=[N+]([O-])O to produce COC(=O)C(C)Oc1noc2cc(Cl)c([N+](=O)[O-])cc12, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.