Using c1ccc2sccc2c1, NS(=O)(=O)c1cc(C(=O)Cl)ccc1Cl to produce NS(=O)(=O)c1cc(C(=O)c2csc3ccccc23)ccc1Cl, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.