Using COC(=O)[C@H](O)[C@@H](NC(=O)OC(C)(C)C)c1ccccc1, O=CC(Cl)(Cl)Cl to produce COC(=O)[C@@H]1OC(C(Cl)(Cl)Cl)N[C@H]1c1ccccc1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.