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