Showing structure for methyl (2s,4as,6s,6ar,10as,10bs)-2-(furan-3-yl)-6a,10b-dimethyl-4,9-dioxo-6-{[(2r,3r,4s,5s,6r)-3,4,5-trihydroxy-6-(hydroxymethyl)oxan-2-yl]oxy}-1h,2h,4ah,5h,6h,10h,10ah-naphtho[2,1-c]pyran-7-carboxylate