InChI=1S/C21H20O13/c22-6-1-11(25)14-13(2-6)32-5-8(15(14)26)7-3-9(23)10(24)4-12(7)33-21-18(29)16(27)17(28)19(34-21)20(30)31/h1-4,8,16-19,21-25,27-29H,5H2,(H,30,31)