Using CCOC(=O)C1CC(=CC#N)CCN1C(=O)OC(C)(C)C to produce CCOC(=O)[C@H]1C[C@@H](CC#N)CCN1C(=O)OC(C)(C)C, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.