InChI=1S/C16H22O9/c1-6(2)8-4-9(17)7(3-10(8)18)5-24-16-13(21)11(19)12(20)14(25-16)15(22)23/h3,6,8,11-14,16,19-21H,4-5H2,1-2H3,(H,22,23)