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