InChI=1S/C15H19N5O9/c16-15-19-11-6(12(25)20-15)18-4(3-17-11)5(21)1-2-28-14-9(24)7(22)8(23)10(29-14)13(26)27/h7-10,14,22-24H,1-3H2,(H,26,27)(H4,16,17,19,20,25)