InChI=1S/C27H28O17/c28-6-14-17(33)18(34)20(36)24(42-14)16-10(31)4-9(30)15-11(32)5-12(41-23(15)16)7-1-2-8(29)13(3-7)43-27-22(38)19(35)21(37)25(44-27)26(39)40/h1-5,14,17-22,24-25,27-31,33-38H,6H2,(H,39,40)