Using O=C(Cl)Cc1ccc(Cl)cc1, NS(=O)(=O)c1nc2ccc(O)cc2s1 to produce NS(=O)(=O)c1nc2ccc(OC(=O)Cc3ccc(Cl)cc3)cc2s1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.