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