InChI=1S/C27H28O16/c28-7-15-18(31)19(32)22(35)26(42-15)40-9-5-12(29)16-14(6-9)39-8-11(17(16)30)10-3-1-2-4-13(10)41-27-23(36)20(33)21(34)24(43-27)25(37)38/h1-6,8,15,18-24,26-29,31-36H,7H2,(H,37,38)