Showing structure for (1as,4as,7s,8ar)-3-[(1r,2r,3r)-3-[(2r,3e,5r)-5,6-dimethylhept-3-en-2-yl]-2-(2-hydroxyethyl)-2-methylcyclopentyl]-7-hydroxy-4a-methyl-1ah,5h,6h,7h,8h-naphtho[1,8a-b]oxiren-4-one