Using CC(C)(CC(O)(Cn1ccc(=O)c2ccccc21)C(F)(F)F)c1cc(F)ccc1O, COC(=O)C(F)(F)Cl to produce CC(C)(CC(O)(Cn1ccc(=O)c2ccccc21)C(F)(F)F)c1cc(F)ccc1OC(F)F, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.