Using CCOC(=O)C(=O)Nc1ccc2sc(C(=O)OCC)cc2c1[N+](=O)[O-] to produce CCOC(=O)c1cc2c(ccc3nc(O)c(O)nc32)s1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.