InChI=1S/C22H20O13/c23-9-2-1-7-16(17(9)34-21-15(26)13(24)14(25)18(35-21)20(27)28)30-5-22(29)8-3-11-12(32-6-31-11)4-10(8)33-19(7)22/h1-4,13-15,18-19,21,23-26,29H,5-6H2,(H,27,28)