Using CS(=O)(=O)c1ccc(S(C)(=O)=O)nc1, Oc1ccc(Oc2ccccc2)cc1 to produce CS(=O)(=O)c1ccc(Oc2ccc(Oc3ccccc3)cc2)nc1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.