Using COc1ccc(C(=O)c2sc(C(F)(F)F)cc2OCc2ccccc2)cc1 to produce COc1ccc(Cc2sc(C(F)(F)F)cc2OCc2ccccc2)cc1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.