InChI=1S/C31H32O19/c1-45-11-4-2-10(3-5-11)13-8-46-15-7-12(6-14(32)17(15)19(13)33)48-31-25(39)21(35)20(34)16(49-31)9-47-30(44)18(28(40)41)26-23(37)22(36)24(38)27(50-26)29(42)43/h2-8,16,18,20-27,31-32,34-39H,9H2,1H3,(H,40,41)(H,42,43)