InChI=1S/C27H30O17/c28-8-14-16(30)17(31)20(34)25(42-14)41-11-5-12(29)15-13(6-11)44-27(39,23(15)36)7-9-1-3-10(4-2-9)40-26-21(35)18(32)19(33)22(43-26)24(37)38/h1-6,14,16-22,25-26,28-35,39H,7-8H2,(H,37,38)