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