(4R)-4-((3S,9R,10S,13R,14R,17R)-10,13-二甲基-3-((四氢-2H-吡喃-2-基)氧基)-2,3,4,5,6,9,10,11,12,13,14,15,16,17-十

(4R)-4-((3S,9R,10S,13R,14R,17R)-10,13-dimethyl-3-((tetrahydro-2H-pyran-2-yl)oxy)-2,3,4,5,6,9,10,11,12,13,14,15,16,17-tetradecahydro-1H-cyclopenta[a]phenanthren-17-yl)pentanal