Using CCO, CCOC(=O)c1cc2c([N+](=O)[O-])c(O)ccc2[nH]1 to produce COc1ccc2[nH]c(C(=O)O)cc2c1[N+](=O)[O-], please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.