(R)-5-((1S,3R,8S,9S,10R,13R,14S,17R)-1,3-bis(methoxymethoxy)-10,13-dimethyl-2,3,4,7,8,9,10,11,12,13,14,15,16,17-tetradecahydro-1H-cyclopenta[a]phenanthren-17-yl)hexanoic acid