InChI=1S/C16H22O9/c1-6(2)7-4-9(18)16(3,5-8(7)17)25-15-12(21)10(19)11(20)13(24-15)14(22)23/h4,6,10-13,15,19-21H,5H2,1-3H3,(H,22,23)