82543-30-4 A-Homo-24-nor-4-oxa-6,7-secochola-7,20,22-triene-6-carboxylic acid, 1-(acetyloxy)-4a-((acetyloxy)methyl)-14,15:21,23-diepoxy-11-(formyloxy)-12-((2-hydroxy-3-methyl-1-oxopentyl)oxy)-4a-methyl-3-oxo-, methyl ester, (1alpha,4abeta,5beta,11beta,12alpha(2R,3R),13alpha,14beta,15beta,17alpha)- Desoxy-14,15-epoxyprieurianin NSC 329511 Prieurianin, desoxy-14,15-epoxy-