InChI=1S/C21H20O14/c22-7-3-11(26)14(15(28)12(27)2-6-1-9(24)10(25)5-8(6)23)13(4-7)34-21-18(31)16(29)17(30)19(35-21)20(32)33/h1,3-5,16-19,21-26,29-31H,2H2,(H,32,33)