Using NO, CO[C@@H]1C[C@@H](C#N)N(C(=O)OCc2ccccc2)C1 to produce CO[C@@H]1C[C@@H](C(N)=NO)N(C(=O)OCc2ccccc2)C1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.