Using CC(C)c1ccccc1S, O=C(CO)c1ccc(F)c(C(F)(F)F)c1 to produce CC(C)c1ccccc1Sc1ccc(C(=O)CO)cc1C(F)(F)F, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.