Using NO, CC1=C(C#N)C(c2ccc3[nH]nc(C=O)c3c2)C(C#N)=C(C)N1 to produce CC1=C(C#N)C(c2ccc3[nH]nc(/C=N/O)c3c2)C(C#N)=C(C)N1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.