InChI=1S/C15H26O9/c1-7(2)5-3-4-6-8(13(19)20)23-15-11(18)9(16)10(17)12(24-15)14(21)22/h7-12,15-18H,3-6H2,1-2H3,(H,19,20)(H,21,22)