InChI=1S/C22H20O12/c1-31-14-4-8(2-3-10(14)23)13-7-12(25)16-11(24)5-9(6-15(16)33-13)32-22-19(28)17(26)18(27)20(34-22)21(29)30/h2-7,17-20,22-24,26-28H,1H3,(H,29,30)/t17-,18-,19+,20-,22+/m0/s1