Using O=C([O-])[O-], CS(=O)(=O)c1cc(C(=O)O)c(Br)cc1F to produce COC(=O)c1cc(S(C)(=O)=O)c(F)cc1Br, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.