Synonyms: 18-Nor-16-oxaandrostane-8-carboxaldehyde,6,15-dihydroxy-4,4-dimethyl-17-oxo-7-(1-oxobutoxy)-, cyclic 8,15-hemiacetal, [5a,6a,7a,8(R),13a,15b]-; Aplyroseol 3; Butanoic acid,tetradecahydro-10,12-dihydroxy-1,1,4a-trimethyl-7-oxo-2H,10H-furo[2,3,4-cd]naphth[2,1-e]isobenzofuran-11-ylester, [4aR-(4aa,4bb,6ab,8ab,10a,10aS*,10bb,11b,12b,12ab)]-