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