InChI=1S/C26H24O12/c1-10(9-27)2-3-11-6-14-17(8-15(11)28)37-25(34)18-13-5-4-12(7-16(13)36-22(14)18)35-26-21(31)19(29)20(30)23(38-26)24(32)33/h2,4-8,19-21,23,26-31H,3,9H2,1H3,(H,32,33)/b10-2+