15,19-Dioxo-seco-beyeran-16-saeure-methylester

((3S,6aS,8aS,9R,12aR,12bS)-3,9,12a-trimethyl-4,6-dioxododecahydro-2H,6H-3,6a-methanonaphtho[2,1-c]oxocin-9-yl)methyl acetate

19-Acetoxy-seco-beyeran-15,16-disaeure

(2S,4aS,4bR,8R,8aS,10aS)-8-Acetoxymethyl-10a-formyl-2,4b,8-trimethyl-tetradecahydro-phenanthrene-2-carboxylic acid

((4R,4aS,6aS,7S,8R,9S,11aS,11bR)-7,8-dihydroxy-4,9,11b-trimethyltetradecahydro-6a,9-methanocyclohepta[a]naphthalen-4-yl)methyl acetate