3H,7H,11H-dipyrano[3,2-b:3',2'-h]xanthen-7-one, 5,8-dihydroxy-3,3,11,11-tetramethyl-6-(3-methyl-2-butenyl)- 5,8-Dihydroxy-3,3,11,11-tetramethyl-6-(3-methyl-but-2-enyl)-3H,11H-4,12,14-trioxa-benzo[a]naphthacen-7-one 5,8-dihydroxy-3,3,11,11-tetramethyl-6-(3-methylbut-2-en-1-yl)-3H,7H,11H-dipyrano[3,2-b:3',2'-h]xanthen-7-one InChI=1/C28H28O6/c1-14(2)7-8-16-20-24(31)21-19(13-18-15(22(21)29)9-11-27(3,4)33-18)32-25(20)17-10-12-28(5,6)34-26(17)23(16)30/h7,9-13,29-30H,8H2,1-6H Mangostenone A