Using CC(=O)c1ccc(-c2cccc(S(C)(=O)=O)c2)s1, CCOC(=O)C(F)(F)F to produce CS(=O)(=O)c1cccc(-c2ccc(C(=O)CC(=O)C(F)(F)F)s2)c1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.