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