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