InChI=1S/C15H19N5O9/c1-3(21)6(22)4-2-16-11-5(17-4)12(26)19-15(18-11)20-13-9(25)7(23)8(24)10(29-13)14(27)28/h2-3,6-10,13,21-25H,1H3,(H,27,28)(H2,16,18,19,20,26)