Using CC(C)(C)OC(=O)N[C@H](C=O)Cc1ccccc1, [C-]#N to produce CC(C)(C)OC(=O)N[C@@H](Cc1ccccc1)C(O)C#N, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.