Using O=S(=O)(Cl)c1cc(Cl)ccc1Cl, Nc1ccc2oncc2c1 to produce O=S(=O)(Nc1ccc2oncc2c1)c1cc(Cl)ccc1Cl, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.