Using O=C(Cl)c1cccc(S(=O)(=O)Cl)c1, COc1ccccc1 to produce COc1ccc(C(=O)c2cccc(S(=O)(=O)Cl)c2)cc1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.