InChI=1/C28H32O17/c1-40-15-3-9(2-12(32)19(15)33)26-16(43-28-25(39)23(37)21(35)18(8-30)45-28)6-11-13(41-26)4-10(31)5-14(11)42-27-24(38)22(36)20(34)17(7-29)44-27/h2-6,17-18,20-25,27-30,34-39H,7-8H2,1H3,(H2-,31,32,33)/p+1