methyl (3R)-3-[(3R,5R,8R,9S,10S,12S,13R,14S,17R)-3,12-diacetyloxy-10,13-dimethyl-2,3,4,5,6,7,8,9,11,12,14,15,16,17-tetradecahydro-1H-cyclopenta[a]phenanthren-17-yl]butanoate;methyl (3R)-3-[(3R,5R,8R,9S,10S,12S,13R,14S,17R)-3,12-diacetoxy-10,13-dimethyl-2,3,4,5,6,7,8,9,11,12,14,15,16,17-tetradecahydro-1H-cyclopenta[a]phenanthren-17-yl]butanoate;(3R)-3-[(3R,5R,8R,9S,10S,12S,13R,14S,17R)-3,12-diacetoxy-10,13-dimethyl-2,3,4,5,6,7,8,9,11,12,14,15,16,17-tetradecahydro-1H-cyclopenta[a]phenanthren-17-yl]butanoic acid methyl ester;(3R)-3-[(3R,5R,8R,9S,10S,12S,13R,14S,17R)-3,12-diacetoxy-10,13-dimethyl-2,3,4,5,6,7,8,9,11,12,14,15,16,17-tetradecahydro-1H-cyclopenta[a]phenanthren-17-yl]butyric acid methyl ester
methyl (3R)-3-[(3R,5R,8R,9S,10S,12S,13R,14S,17R)-3,12-diacetyloxy-10,13-dimethyl-2,3,4,5,6,7,8,9,11,12,14,15,16,17-tetradecahydro-1H-cyclopenta[a]phenanthren-17-yl]butanoate