6-hydroxy-3,7-dimethoxy-8-(2-oxo-3-methylbut-3-enyl)-60,60-dimethyl-50-hydroxy-40,50-dihydropyrano(20,30:1,2)xanthone
6-hydroxy-3,7-dimethoxy-8-(2-oxo-3-methylbut-3-enyl)-60,60-dimethyl-50-hydroxy-40,50-dihydropyrano(20,30:1,2)xanthone