IUPAC:(1R,3aS,3bS,9bS,10S,11aS)-1-ethynyl-10-methoxy-11a-methyl-1H,2H,3H,3aH,3bH,4H,5H,9bH,10H,11H,11aH-cyclopenta[a]phenanthrene-1,7-diol
IUPAC:(1R,3aS,3bS,9bS,10S,11aS)-1-ethynyl-10-methoxy-11a-methyl-1H,2H,3H,3aH,3bH,4H,5H,9bH,10H,11H,11aH-cyclopenta[a]phenanthrene-1,7-diol