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