InChI=1S/C26H28O12/c1-10(9-27)4-5-14-12(3)22-17(35-16-7-13(28)6-11(2)18(16)25(34)37-22)8-15(14)36-26-21(31)19(29)20(30)23(38-26)24(32)33/h4,6-8,19-21,23,26-31H,5,9H2,1-3H3,(H,32,33)/b10-4+