Using CCOC(=O)C[C@H](NC(=O)CN1C(=O)N[C@@](C)(c2ccc(C#N)cc2)C1=O)c1ccccc1, NO to produce CCOC(=O)C[C@H](NC(=O)CN1C(=O)N[C@@](C)(c2ccc(C(N)=NO)cc2)C1=O)c1ccccc1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.