InChI=1S/C21H18O13/c22-7-3-12-14(8(23)5-11(32-12)6-1-9(24)15(26)10(25)2-6)13(4-7)33-21-18(29)16(27)17(28)19(34-21)20(30)31/h1-5,16-19,21-22,24-29H,(H,30,31)