InChI=1S/C31H36O19/c32-9-16-19(34)20(35)23(38)30(48-16)50-28-18-14(15(10-45-28)26(40)41)7-8-31(18,44)11-46-17(33)6-3-12-1-4-13(5-2-12)47-29-24(39)21(36)22(37)25(49-29)27(42)43/h1-8,10,14,16,18-25,28-30,32,34-39,44H,9,11H2,(H,40,41)(H,42,43)/b6-3+