Using OB(O)c1ccccc1, COC(=O)[C@@H]1C[C@@H](S(=O)(=O)c2ccccc2C(F)(F)F)CN1 to produce COC(=O)[C@@H]1C[C@@H](S(=O)(=O)c2ccccc2C(F)(F)F)CN1c1ccccc1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.