2-Butenoic acid, 2-methyl-, 2,3,3a,4,5,7,9a,9b-octahydro-3,6,9-trimethyl-2,7-dioxoazuleno[4,5-b]furan-3,4-diyl ester, [3R-[3.alpha.(Z),3a.beta.,4.beta.(Z),9a.beta.,9b.alpha.]]- 33439-66-6 4-Angeloyloxypruteninone Guaia-1(10),3-dien-12-oic acid, 6.alpha.,8,11-trihydroxy-2-oxo-, 12,6-lactone, bis(2-methylcrotonate), (Z,Z)-(8S,11R)- NSC292658 PRUTENINONE, 8-ANGELOYLOXY