InChI=1S/C15H24O9/c1-2-3-4-5-6-8(7-16)14(22)24-15-11(19)9(17)10(18)12(23-15)13(20)21/h6,9-12,15-19H,2-5,7H2,1H3,(H,20,21)/b8-6-