Using CCOC(=O)C1C(C=C(c2ccccc2)C(F)(F)F)C1(C)C to produce CC1(C)C(C=C(c2ccccc2)C(F)(F)F)C1C(=O)O, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.