65580-16-7

(E)-2-Methyl-2-butenoic acid (3aS)-3b,4aβ,5,5aα,6,7,8aβ,8bα-octahydro-1-(hydroxymethyl)-3bβ-methyl-6-methylene-5,7-dioxooxireno[7,8]azuleno[4,5-b]furan-3aα(3H)-yl ester