Using CC(C)(C)OC(=O)N[C@@H](CCSC(F)(F)F)C(=O)O, Nc1ccc(F)cc1F to produce CC(C)(C)OC(=O)NC(CCSC(F)(F)F)C(=O)Nc1ccc(F)cc1F, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.