Using O=S(=O)(Nc1ccccc1)C(F)(F)F, COC(=O)c1ccc(O)c(C(=O)OC)c1 to produce COC(=O)c1ccc(OS(=O)(=O)C(F)(F)F)c(C(=O)OC)c1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.