5A-羟基拉肖皂苷元

(2AR,2'R,4S,5'R,6aR,6bS,8aS,8bR,9S,11aS,12aS,12bS)-2a,4-dihydroxy-5',6a,8a,9-tetramethylicosahydrospiro[naphtho[2',1':4,5]indeno[2,1-b]furan-10,2'-pyran]-2(11aH)-one