Using COC(=O)C(c1ccccc1Cl)c1cc(Cl)ccc1[N+](=O)[O-] to produce O=[N+]([O-])c1ccc(Cl)cc1C(CO)c1ccccc1Cl, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.