InChI=1S/C15H24O9/c1-3-4-5-8(16)6-7(2)14(22)24-15-11(19)9(17)10(18)12(23-15)13(20)21/h6,8-12,15-19H,3-5H2,1-2H3,(H,20,21)/b7-6-