InChI=1S/C21H22O13/c1-6(13(26)12-10(24)4-7(22)5-11(12)25)8-2-3-9(23)14(27)18(8)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)