(3S,8S,9S,10R,13S,14S,17S)-(R,Z)-5-hydroxypent-3-en-2-yl 3-acetoxy-10,13-dimethyl-2,3,4,7,8,9,10,11,12,13,14,15,16,17-tetradecahydro-1H-cyclopenta[a]phenanthrene-17-carboxylate