Using CN(C(=O)OC(C)(C)C)C1CN(C(=O)c2ccc(C#N)cc2)CC1c1ccc(Cl)c(Cl)c1 to produce CNC1CN(C(=O)c2ccc(C#N)cc2)CC1c1ccc(Cl)c(Cl)c1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.