(3aS,5aR,6R,9aS,9bR,11aS)-6,9a-Dimethyl-11-methylene-1-oxo-tetradecahydro-cyclobuta[d]phenanthrene-6-carboxylic acid methyl ester

rac-methyl (4R,6aR,8aS,9S,12aR,12bR)-4-hydroxy-5,9,12a-trimethyl-4,5,6,6a,7,8,8a,9,10,11,12,12a-dodecahydro-4,12b-methanonaphtho[1,2-d]oxocine-9-carboxylate

rac-methyl (3R,3aS,4aR,4bR,7R,10aS,10bR)-3a,7,10a-trimethyltetradecahydro-3,10b-methanonaphtho[2',1':3,4]cyclohepta[1,2-b]oxirene-7-carboxylate