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