Synonyms: A-Homo-24-nor-4-oxachola-1,20,22-triene-3,15-dione,21,23-epoxy-7-hydroxy-4,4,8-trimethyl-, (5a,7a,13a,17a)-; 1H-Cyclopenta[5,6]naphth[2,1-c]oxepin-3,10-dione,8-(3-furanyl)-5a,5b,6,7,7a,8,9,10a,10b,11,12,12a-dodecahydro-11-hydroxy-1,1,5a,7a,10b-pentamethyl-,[5aR-(5aa,5bb,7ab,8b,10ab,10ba,11b,12ab)]-; Ouabanginone