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