Using CCC[C@]1(C(=O)c2ccc(Cl)c(Cl)c2)CC(O)CN1C(=O)OC(C)(C)C, O=S(=O)(F)C(F)(F)C(F)(F)C(F)(F)C(F)(F)F to produce CCC[C@@]1(C(=O)c2ccc(Cl)c(Cl)c2)CC(F)CN1C(=O)OC(C)(C)C, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.