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