Using Nc1ccc(S(=O)(=O)c2ccccc2)cc1, CC(O)(C(=O)O)C(F)F to produce CC(O)(C(=O)Nc1ccc(S(=O)(=O)c2ccccc2)cc1)C(F)F, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.