(3S,4S,5R,8R,9R,10R,13S,14R,15S)-3-((R)-2-Hydroxy-1-methyl-ethyl)-15-isopropyl-4-(2-methoxycarbonyl-ethyl)-4,9,10-trimethyl-hexadecahydro-cyclopenta[a]phenanthrene-13-carboxylic acid methyl ester

(4R)-23-hydroxy-3,4-secolupane-3,28-dioic acid

(3S,4S,5R,8R,9R,10R,13S,14R,15S)-15-Isopropyl-4-(2-methoxycarbonyl-ethyl)-4,9,10-trimethyl-3-((R)-1-methyl-2-oxo-ethyl)-hexadecahydro-cyclopenta[a]phenanthrene-13-carboxylic acid methyl ester

28-methyl ester, 3-nitrile of (4R)-23-hydroxy-3,4-secolupane-3,28-dioic acid

(3R,4R,5R,8R,9R,10R,13S,14R,15S)-4-(2-Carboxy-ethyl)-3-((R)-1-hydroxy-ethyl)-15-isopropyl-4,9,10-trimethyl-hexadecahydro-cyclopenta[a]phenanthrene-13-carboxylic acid