Using COC(=O)n1cc(C2OCCO2)c(-c2ccc([N+](=O)[O-])o2)n1 to produce O=[N+]([O-])c1ccc(-c2n[nH]cc2C2OCCO2)o1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.