InChI=1S/C27H28O16/c1-8-15(30)17(32)20(35)26(39-8)42-23-16(31)14-12(29)6-10(28)7-13(14)41-22(23)9-2-4-11(5-3-9)40-27-21(36)18(33)19(34)24(43-27)25(37)38/h2-8,15,17-21,24,26-30,32-36H,1H3,(H,37,38)