(1S,2R,5S,10R,11S,14R,15S)-5-(acetyloxy)-14-ethynyl-15-methyltetracyclo[8.7.0.0^{2,7}.0^{11,15}]heptadec-6-en-14-yl acetate
(1S,2R,5S,10R,11S,14R,15S)-5-(acetyloxy)-14-ethynyl-15-methyltetracyclo[8.7.0.02,7.011,15]heptadec-6-en-14-yl acetate
(1R,3aS,3bR,7S,9aR,9bS,11aS)-7-(acetyloxy)-1-ethynyl-11a-methyl-1H,2H,3H,3aH,3bH,4H,5H,7H,8H,9H,9aH,9bH,10H,11H,11aH-cyclopenta[a]phenanthren-1-yl acetate