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