Benzenesulfonamide, 4-(1,4,5,6,7,7-hexachlorobicyclo[2.2.1]hept-5-en-2-yl)-N-phenyl- Benzenesulfonanilide, 4-(1,4,5,6,7,7-hexachlorobicyclo[2.2.1]hept-5-en-2-yl)- NSC29828