Using CC(=O)SC(c1cc(C(F)(F)F)cc(C(F)(F)F)c1)[C@H](C)NC(=O)OC(C)(C)C to produce C[C@H](NC(=O)OC(C)(C)C)C(S)c1cc(C(F)(F)F)cc(C(F)(F)F)c1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.