InChI=1S/C21H22O13/c1-6(8-3-2-7(22)4-9(8)23)13(26)12-10(24)5-11(25)14(27)18(12)33-21-17(30)15(28)16(29)19(34-21)20(31)32/h2-6,15-17,19,21-25,27-30H,1H3,(H,31,32)