InChI=1S/C24H20O14/c25-11-6-10-7-16(23(34)36-15(10)8-12(11)26)35-14-3-1-9(5-13(14)27)2-4-17(28)37-24-20(31)18(29)19(30)21(38-24)22(32)33/h1-8,18-21,24-27,29-31H,(H,32,33)/b4-2+