InChI=1S/C16H24O8/c1-8(2)5-4-6-9(3)7-10(17)23-16-13(20)11(18)12(19)14(24-16)15(21)22/h5,7,11-14,16,18-20H,4,6H2,1-3H3,(H,21,22)/b9-7+