(3E,7Z)-Dollabella-3,7,12-trien-17-oic acid 3-Isopropyl-10,12a-dimethyl- 1,3a,4,5,8,9,12,12a-octahydro-cyclopentaundecene-6-carboxylic acid 6-cyclopentacycloundecenecarboxylic acid, 1,3a,4,5,8,9,12,12a-octahydro-10,12a-dimethyl-3-(1-methylethyl)-, (3aS,6Z,10E,12aR)- Dolabeserpenoic acid A InChI=1/C20H30O2/c1-14(2)17-11-13-20(4)12-10-15(3)6-5-7-16(19(21)22)8-9-18(17)20/h7,10-11,14,18H,5-6,8-9,12-13H2,1-4H3,(H,21,22)/b15-10+,16-7-/t18-,20-/m1/s rel-(3aR,6Z,10E,12aS)-3-isopropyl-10,12a-dimethyl-1,3a,4,5,8,9,12,12a-octahydrocyclopenta[11]annulene-6-carboxylic acid