methyl (4R)-4-[(3R,5R,6S,8S,9S,10R,13R,14S,17R)-3,6-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]pentanoate;methyl (4R)-4-[(3R,5R,6S,8S,9S,10R,13R,14S,17R)-3,6-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]pentanoate;(4R)-4-[(3R,5R,6S,8S,9S,10R,13R,14S,17R)-3,6-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]pentanoic acid methyl ester;(4R)-4-[(3R,5R,6S,8S,9S,10R,13R,14S,17R)-3,6-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]valeric acid methyl ester
methyl (4R)-4-[(3R,5R,6S,8S,9S,10R,13R,14S,17R)-3,6-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]pentanoate