Using O=Cc1ccccc1, CC(C)(C)OC(=O)C[C@@H](CN)Nc1ccc(C#N)c(Cl)c1 to produce CC(C)(C)OC(=O)C[C@@H](CNCc1ccccc1)Nc1ccc(C#N)c(Cl)c1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.