Using NO, Cn1nnnc1C(=NOCc1cccc(C=O)n1)c1ccccc1 to produce Cn1nnnc1C(=NOCc1cccc(C=NO)n1)c1ccccc1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.