InChI=1S/C20H18O14/c21-5-2-1-3-6-8(5)11(22)9(15(32-6)7-4-31-7)10(17(26)27)19(30)34-20-14(25)12(23)13(24)16(33-20)18(28)29/h1-3,7,10,12-14,16,20-21,23-25H,4H2,(H,26,27)(H,28,29)