Showing structure for (2r,2'r,4'as,6'r,8'ar)-4,6',7-trihydroxy-2',5',5',8'a-tetramethyl-3',4',4'a,6',7',8'-hexahydro-2'h,3h-spiro[furo[2,3-f]isoindole-2,1'-naphthalen]-5-one