InChI=1S/C16H24O9/c1-8(5-7-17)4-6-16(2,3)15(23)25-14-11(20)9(18)10(19)12(24-14)13(21)22/h5,7,9-12,14,18-20H,4,6H2,1-3H3,(H,21,22)/b8-5+