64929-59-5

(2aR,6aR,6bR,8aS,8bS,9R,11aS,12aS)-3,3,6a,8a,12a-Pentamethyl-9-(4-methylpent-3-en-1-yl)-2a,3,5,6,6a,6b,7,8,8a,8b,9,11a,12,12a-tetradecahydro-2H-naphtho[2′,1′:4,5]indeno[2,1-b]furan-2,4,10-trione