Using NO, CC1Cc2cc3c(cc2C(c2ccc([N+](=O)[O-])cc2)=NN1C#N)OCO3 to produce CC1Cc2cc3c(cc2C(c2ccc([N+](=O)[O-])cc2)=NN1C(N)=NO)OCO3, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.