Showing structure for methyl 4,8,9-trihydroxy-7-[5-hydroxy-2-(methoxycarbonyl)-7-methyl-4-oxo-2-(5-oxooxolan-2-yl)-3h-1-benzopyran-8-yl]-6-methyl-1-oxo-3,4-dihydro-2h-xanthene-4a-carboxylate