InChI=1S/C16H24O9/c1-2-3-6-9(7-4-5-8-10(17)18)24-16-13(21)11(19)12(20)14(25-16)15(22)23/h4-5,7-9,11-14,16,19-21H,2-3,6H2,1H3,(H,17,18)(H,22,23)/b7-4-,8-5+