Using COC(=O)C(NS(=O)(=O)c1ccc(Cl)cc1)C(CC(F)(F)F)CC(F)(F)F to produce O=S(=O)(NC(CO)C(CC(F)(F)F)CC(F)(F)F)c1ccc(Cl)cc1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.