2(3H)-Naphthalenone, 4,4a,5,6,7,8-hexahydro-4a-methyl-6-(3-oxobutyl)- 4alpha-beta-Methyl-6beta-(3'-oxobutyl)-2,3,4,4a,5,6,7,8-octahydro-2-naphthalenone 78400-33-6 Brl 20459 Brl-20459