Synonyms: 2,3,3a,3b,4,5,6a,6b-octachloro-3a,3b,6a,6b-tetrahydrocyclobuta[1,2-a:3,4-a']dicyclopentene-1,6-dione;50565-73-6;NSC139189;AC1L5ZPC;AC1Q3FWA;AR-1D1898;NSC-139189;Cyclobuta[1,4]dicyclopentene-1,6-dione, 3a,3b,6a,6b-tetrahydro-2,3,3a,3b,4,5,6a,6b-octachloro-