Showing structure for methyl 2-(furan-3-yl)-4a-hydroxy-10b-methyl-4-oxo-6-{[3,4,5-trihydroxy-6-(hydroxymethyl)oxan-2-yl]oxy}-1h,2h,5h,6h,8h,9h,10h,10ah-naphtho[2,1-c]pyran-7-carboxylate