InChI=1S/C20H18O16/c21-5-1-3(17(29)30)7(11(24)9(5)22)8-4(18(31)32)2-6(10(23)12(8)25)35-20-15(28)13(26)14(27)16(36-20)19(33)34/h1-2,13-16,20-28H,(H,29,30)(H,31,32)(H,33,34)