4-Chloro-N-(4-chloro­phenyl­sulfon­yl)-N-(3-oxo-2,3-dihydro-1,2-benzisothia­zol-2-yl)benzene­sulfonamide

In the title compound, C(19)H(12)Cl(2)N(2)O(5)S(3), the benzene rings of the chloro­phenyl­sulfonyl groups form a dihedral angle of 35.85 (8)° and are inclined at angles of 23.51 (6) and 59.22 (6)° with respect to the essentially planar benzisothia­zole ring system [maximum deviation = 0.030 (2) Å]. The mol­ecular conformation is stabilized by an intra­molecular C—H⋯O hydrogen bond. In the crystal packing, mol­ecules are linked into chains parallel to the a axis by inter­molecular C—H⋯O hydrogen bonds and π–π stacking inter­actions, with centroid–centroid distances of 3.592 (5) Å.