InChI=1S/C20H18O12/c21-5-8-4-10(23)13-11(30-8)2-6-1-7(3-9(22)12(6)14(13)24)31-20-17(27)15(25)16(26)18(32-20)19(28)29/h1-4,15-18,20-22,24-27H,5H2,(H,28,29)