1,4-Phenanthrenedione, 4b,5,6,7,8,8a-hexahydro-3-hydroxy-4b,8,8-trimethyl-2-(1-methylethyl)-, (4bS-trans)- 12-Hydroxy-abieta-6,8,12-trien-11,14-dione 6,7-Dehydroroyleanone 6,7-Dhra 6855-99-8