InChI=1S/C22H24O12/c1-29-11-6-10(32-16(23)9-11)4-5-13-14(31-3)7-12(30-2)8-15(13)33-22-19(26)17(24)18(25)20(34-22)21(27)28/h4-9,17-20,22,24-26H,1-3H3,(H,27,28)/b5-4+