InChI=1S/C16H24O8/c1-2-3-4-6-9-10(23-9)7-5-8-22-16-13(19)11(17)12(18)14(24-16)15(20)21/h3-5,7,9-14,16-19H,2,6,8H2,1H3,(H,20,21)/b4-3-,7-5+