Using CCOC(=O)C1=C(c2ccc3[nH]cc(C#N)c3c2)CCC1 to produce CCOC(=O)[C@@H]1CCC[C@@H]1c1ccc2[nH]cc(C#N)c2c1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.