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