Using CCOC(=O)C(c1ccc(C2CC(=O)C2(Cl)Cl)cc1)[C@@H](C)C(F)(F)F to produce CCOC(=O)C(c1ccc(C2CC(=O)C2)cc1)[C@@H](C)C(F)(F)F, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.