Using O=C(Nc1ccc(Sc2ccnc(O)c2)cc1)c1ccc([N+](=O)[O-])cc1 to produce Nc1ccc(C(=O)Nc2ccc(Sc3ccnc(O)c3)cc2)cc1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.