Using COC(=O)c1ccc(OCC2CN(c3ccc([N+](=O)[O-])cc3)C(=O)O2)cc1 to produce O=C(O)c1ccc(OCC2CN(c3ccc([N+](=O)[O-])cc3)C(=O)O2)cc1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.