26543-54-4 5-beta-CARD-20(22)-ENOLIDE, 8,19-EPOXY-3-beta,5,19-TRIHYDROXY- 8,19-Epoxy-3-beta,5,19-trihydroxy-5-beta-card-20(22)-enolide Card-20(22)-enolide, 8,19-epoxy-3,5,19-trihydroxy-, (3-beta,5-beta)- (9CI) Pseudostrophanthidin