Using CC(=O)CS(=O)(=O)C(c1ccc(Cl)cc1)c1ccc(Cl)cc1, O=S(=O)(NF)c1ccccc1 to produce CC(=O)C(F)S(=O)(=O)C(c1ccc(Cl)cc1)c1ccc(Cl)cc1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.