Using NO, Cc1nccn1-c1ccc(Sc2cccc(C3(C=O)CCOCC3)c2)cc1 to produce Cc1nccn1-c1ccc(Sc2cccc(C3(C=NO)CCOCC3)c2)cc1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.