Using O=C(OCc1ccccc1)C(C(=O)OCc1ccccc1)c1ccncc1[N+](=O)[O-] to produce O=C(Cc1ccncc1[N+](=O)[O-])OCc1ccccc1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.