InChI=1S/C27H32O17/c28-7-14-17(33)19(35)21(37)24(42-14)16-12(32)6-11(31)15(18(16)34)10(30)4-2-8-1-3-9(29)13(5-8)43-27-23(39)20(36)22(38)25(44-27)26(40)41/h1,3,5-6,14,17,19-25,27-29,31-39H,2,4,7H2,(H,40,41)