InChI=1S/C15H26N2O9/c1-7(8(2)18)17(16-24)6-5-15(3,4)26-14-11(21)9(19)10(20)12(25-14)13(22)23/h7,9-12,14,19-21H,5-6H2,1-4H3,(H,22,23)