2,3-phenanthrenediol, 7-ethenyl-1,2,3,4,4a,5,6,7,8,9,10,10a-dodecahydro-1-(hydroxymethyl)-1,4a,7-trimethyl- InChI=1/C20H32O3/c1-5-18(2)9-8-14-13(10-18)6-7-16-19(14,3)11-15(22)17(23)20(16,4)12-21/h5,15-17,21-23H,1,6-12H2,2-4H pimara-8,15-diene-2,3,18-triol