Using COC(=O)C(CNC(=O)OC(C)(C)C)Cc1ccc(Cl)cc1 to produce CC(C)(C)OC(=O)NCC(Cc1ccc(Cl)cc1)C(=O)O, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.