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