Using CCOC(C)=O, Cc1ccc(-c2ccc(S(C)(=O)=O)cc2)n1-c1ccc(F)cc1 to produce CC(=O)OCc1cc(-c2ccc(S(C)(=O)=O)cc2)n(-c2ccc(F)cc2)c1C, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.