IUPAC:(1R,3aS,3bR,5aS,7S,9aS,9bS,11aR)-9a-formyl-3a,5a-dihydroxy-11a-methyl-1-(2-oxo-2H-pyran-5-yl)-hexadecahydro-1H-cyclopenta[a]phenanthren-7-yl 3-methylbut-2-enoate
IUPAC:(1R,3aS,3bR,5aS,7S,9aS,9bS,11aR)-9a-formyl-3a,5a-dihydroxy-11a-methyl-1-(2-oxo-2H-pyran-5-yl)-hexadecahydro-1H-cyclopenta[a]phenanthren-7-yl 3-methylbut-2-enoate