Using CN(C[C@H](C[C@H]1CC[C@@H](O)CC1)NC(=O)OC(C)(C)C)C(=O)OCc1ccccc1, O=S(=O)(F)C(F)(F)C(F)(F)C(F)(F)C(F)(F)F to produce CN(C[C@H](C[C@H]1CC[C@H](F)CC1)NC(=O)OC(C)(C)C)C(=O)OCc1ccccc1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.