(-)-(3S)-5-((1R,2R,4aS,8aS)-2-Acetoxy-2,5,5,8a-tetramethyldecahydro-1-naphthalenyl)-3-methylpentanoic Acid 5,10-cycloretinoic acid, 9-(acetyloxy)-5,6,7,8,9,10,11,12,13,14-decahydro-, (5S,9R,10R,13S)- 8-Acetyl-labdanolic Acid InChI=1/C22H38O4/c1-15(14-19(24)25)8-9-18-21(5)12-7-11-20(3,4)17(21)10-13-22(18,6)26-16(2)23/h15,17-18H,7-14H2,1-6H3,(H,24,25)/t15-,17?,18+,21-,22+/m0/s rel-(5R,9S,10S,13R)-9-(acetyloxy)-5,6,7,8,9,10,11,12,13,14-decahydro-5,10-cycloretinoic acid