InChI=1S/C22H24O12/c1-29-12-8-11(32-14(23)9-12)6-4-10-5-7-13(30-2)19(31-3)18(10)33-22-17(26)15(24)16(25)20(34-22)21(27)28/h4-9,15-17,20,22,24-26H,1-3H3,(H,27,28)/b6-4+