InChI=1S/C21H22O10/c22-5-7-3-9-13(21-20(30)19(29)17(27)12(6-23)31-21)8-1-2-10(24)16(26)15(8)18(28)14(9)11(25)4-7/h1-4,12-13,17,19-27,29-30H,5-6H2