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