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