[(3S,5R,10S,13R,14S,17R)-14-hydroxy-10,13-dimethyl-12-oxo-17-(5-oxo-2H-furan-3-yl)-2,3,4,5,6,7,8,9,11,15,16,17-dodecahydro-1H-cyclopenta[a]phenanthren-3-yl] acetate