Synonyms: 16,17-Seco-24-nor-5a,13a,14b,17a-chola-20,22-dien-16-oic acid,14,15b:21,23-diepoxy-17-hydroxy-4,4,8-trimethyl-3,7-dioxo-,d-lactone (8CI);D-Homo-24-nor-17-oxachola-20,22-diene-3,7,16-trione,14,15:21,23-diepoxy-4,4,8-trimethyl-, (5a,13a,14b,15b,17aa)-; Gedunin, 7-deacetoxy-1,2-dihydro-7-oxo- (7CI); Ekeberin C1; NSC 309911