Using COc1ccc(C(C)C)cc1-c1ccc(C(F)(F)F)cc1CO to produce COc1ccc(C(C)C)cc1-c1ccc(C(F)(F)F)cc1C=O, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.