Showing structure for 3-{[(2r,3r,4s,5r,6s)-6-{[(3s,4r,4as)-4-ethenyl-8-oxo-3h,4h,4ah,5h,6h-pyrano[3,4-c]pyran-3-yl]oxy}-4-(acetyloxy)-3,5-dihydroxyoxan-2-yl]methoxy}benzoic acid