InChI=1S/C27H30O17/c28-6-12-15(32)19(36)21(38)26(41-12)43-24-10(31)5-11-14(17(24)34)18(35)25(23(40-11)8-1-3-9(30)4-2-8)44-27-22(39)20(37)16(33)13(7-29)42-27/h1-5,12-13,15-16,19-22,26-34,36-39H,6-7H2