4,5,8,9,10,11-Hexahydro-4,8-dihydroxy-5-(1-hydroxyheptyl)-10-[hydroxy(tetrahydro-6-oxo-2H-pyran-2-yl)methyl]-1H-cyclonona[1,2-c:5,6-c]difuran-1,3,6-trione [ 70253-63-3 ]