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