115995-14-7 2-Butenoic acid, 3-methyl-, 2,3,3a,4,5,7,7a,8a,8b,8c-decahydro-4,8b-dihydroxy-6,8a-dimethyl-3-methylene-2-oxooxireno(2,3)azuleno(4,5-b)furan-5-yl ester, (3aR-(3aalpha,4alpha,5beta,7abeta,8abeta,8balpha,8cbeta))- 5-Hydroxytomacephalin