InChI=1S/C16H28O9/c1-15(2,23)5-4-6-16(3,7-8-17)25-14-11(20)9(18)10(19)12(24-14)13(21)22/h4-5,9-12,14,17-20,23H,6-8H2,1-3H3,(H,21,22)/b5-4+