(8S,8’S,9S,9’S,10R,10’R,11S,11’S,13S,13’S,14S,14’S,17R,17’R)-(2,3-dihydroxysuccinyl)bis(11-hydroxy-10,13-dimethyl-3-oxo-2,3,6,7,8,9,10,11,12,13,14,15,16,17-tetradecahydro-1H-cyclopenta[a]phenanthrene-17,17-diyl) dipentanoate