Using CCOC(=O)C(C)(C#N)c1cccc2c(-c3ccc(Cl)cc3)nccc12 to produce CC(C#N)c1cccc2c(-c3ccc(Cl)cc3)nccc12, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.