Using O=Cc1ccc(F)cc1, CC(=O)N[C@@H](C(=O)O)C(C)(C)S to produce CC(=O)N1[C@@H](c2ccc(F)cc2)SC(C)(C)[C@@H]1C(=O)O, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.