(R)-4-((5R,8S,9S,10S,12S,13R,14S,17R)-12-Hydroxy-10,13-dimethyl-3-oxo-hexadecahydro-cyclopenta[a]phenanthren-17-yl)-pentanoic acid methyl ester
(R)-4-((3R,5R,8S,9S,10S,12S,13R,14S,17R)-3,12-Dihydroxy-10,13-dimethyl-hexadecahydro-cyclopenta[a]phenanthren-17-yl)-pentanoic acid methyl ester
(R)-4-((3R,5R,8S,9S,10S,13R,14S,17R)-3-Hydroxy-10,13-dimethyl-12-oxo-hexadecahydro-cyclopenta[a]phenanthren-17-yl)-pentanoic acid methyl ester
(S)-4-((5R,8S,9S,10S,13R,14S,17R)-10,13-Dimethyl-3,12-dioxo-hexadecahydro-cyclopenta[a]phenanthren-17-yl)-pentanoic acid methyl ester