rac-methyl (3aR,5aS,6S,9aR,9bS,11aS)-2,6,9a-trimethyl-11-oxododecahydro-2H,10H-spiro[cyclobuta[d]phenanthrene-1,2'-[1,3]dioxolane]-6-carboxylate

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

(4aR,4bR,8S,8aR)-1-Isopropyl-4b,8-dimethyl-3-oxo-4,4a,4b,5,6,7,8,8a,9,10-decahydro-3H-2-oxa-phenanthrene-8-carboxylic acid methyl ester

(4bS,8S,8aR)-1-Isopropyl-4b,8-dimethyl-3-oxo-4b,5,6,7,8,8a,9,10-octahydro-3H-2-oxa-phenanthrene-8-carboxylic acid methyl ester