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