Using O=C(O)c1cc(S(=O)(=O)Cl)ccc1Cl, Nc1ccc(Cl)cc1Cl to produce O=C(O)c1cc(S(=O)(=O)Nc2ccc(Cl)cc2Cl)ccc1Cl, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.