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