InChI=1S/C16H28O9/c1-8(5-7-17)9(18)4-6-16(2,3)25-15-12(21)10(19)11(20)13(24-15)14(22)23/h4,6,8-13,15,17-21H,5,7H2,1-3H3,(H,22,23)/b6-4+