Using Cc1c(C=O)cc(-c2ccc(S(C)(=O)=O)cc2)n1-c1ccc(F)cc1 to produce Cc1c(CO)cc(-c2ccc(S(C)(=O)=O)cc2)n1-c1ccc(F)cc1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.