Showing structure for (3as,5ar,6r,9r,9as,9bs)-5a-methyl-3-methylidene-2-oxo-6-{[(2r,3r,4s,5s,6r)-3,4,5-trihydroxy-6-(hydroxymethyl)oxan-2-yl]oxy}-octahydro-3ah-naphtho[1,2-b]furan-9-carbaldehyde