Showing structure for 2-{[(4ar)-4-ethenyl-8-oxo-3h,4h,4ah,5h,6h-pyrano[3,4-c]pyran-3-yl]oxy}-4,5-dihydroxy-6-(hydroxymethyl)oxan-3-yl 3,3',5-trihydroxy-[1,1'-biphenyl]-2-carboxylate