Showing structure for (3s,3ar,4s,6r,6as,9r,9as,9bs)-6,6a,9-trihydroxy-3,6,9-trimethyl-2-oxo-3h,3ah,4h,5h,9ah,9bh-azuleno[4,5-b]furan-4-yl 3-methylbutanoate