1,1a,3,3a,4,5,5,5a,5b,6-decachlorooctahydro-1,3,4-metheno-2h-cyclobuta[cd]pentalen-2-one; Compound 1189; Decachloroketone; Decachlorooctahydro-1,3,4-metheno-2h-cyclobuta[cd]pentalen-2-one; Decachloropentacyclo(5.2.1.0**2,**6.0**3,**90**5,**8)decan-4-one; Decachlorotetracyclodecanone; Ent 16391; Gc 1189; Kepone; Merex; 1,3,4-Metheno-2H-cyclobuta[cd]pentalen-2-one, 1,1a,3,3a,4,5,5,5a,5b,6-decachlorooctahydro.