2-Butanoic acid, 4-hydroxy-2-(hydroxymethyl)-, 9-(acetyloxy)-2,3,3a,4,5,8,9,11a-octahydro-6,10-dimethyl-3-methylene-2-oxocyclodeca(b)furan-4-yl ester, (3aR*,4S*(E),6E,9S*,10Z,11aR*)- 38458-58-1 Eucannabinolide Hiyodorilactone A NSC 311052 Schkuhrin I