5,6-环氧-4,20,22-三羟基-1-氧代麦角甾-2,24-二烯-26-酸delta-内酯

(20R)-1α,3β-bismethoxymethoxy-20-formyl-20-hydroxypregn-5-ene

3β,20αF-dihydroxy-1-oxo-20R,22R-witha-5,24-dienolide