2-Butenoic acid, 2-methyl-, 1,2,3,3a,4,7,8,8a-octahydro-1,3-dihydroxy-3a,6-dimethyl-1- (1-methylethyl)-4,8-azulenediyl ester, [1R-[1.alpha.,3.alpha.,3a.alpha.,4.beta.(Z),8.beta.(Z), 8a.beta.]]- 95342-43-1 From Ferula tingitana NSC606934 Tingitanol