Synonyms: 15-Oxaergostane;Phenanthro[1,2-b]furan, hexadecahydro-9a,11a-dimethyl-1-(1,4,5-trimethylhexyl)-,[1R(1R,4S),3aS,3bR,9aS,9bS,11aR]-[partial]-; [1R-[1a(1R*,4S*),3ab,3ba,9aa,9bb,11aa]]-Hexadecahydro-9a,11a-dimethyl-1-(1,4,5-trimethylhexyl)phenanthro[1,2-b]furan