Using CC(c1ccc(Cl)c(Cl)c1)N1CCO[C@@H](CNC(=O)OC(C)(C)C)C1 to produce CC(c1ccc(Cl)c(Cl)c1)N1CCO[C@@H](CN)C1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.