Showing structure for [1aR-(1aR*,5R*,7R*,10aR*,10bR*)]-2-(Hydroxymethyl)-, 5-(acetyloxy)-8-[(acetyloxy)methyl]-1a,2,3,4,5,6,7,9,10a,10b-decahydro-1a,5-dimethyl-9-oxooxireno[9,10]cyclodeca[1,2-b]furan-7-yl ester 2-propenoic acid