Showing structure for (3ar,4s,5ar,6r,9r,9as,9bs)-6,9-dihydroxy-5a,9-dimethyl-3-methylidene-2-oxo-3ah,4h,5h,6h,9ah,9bh-naphtho[1,2-b]furan-4-yl 2-methylpropanoate