Showing structure for 3-hydroxy-3,4,8,8a-tetramethyl-4-{6-oxo-2h,3h,4h-furo[2,3-c]furan-2-yl}-2-(pyridine-3-carbonyloxy)-2,4a,5,6-tetrahydro-1h-naphthalen-1-yl pyridine-3-carboxylate