B57
  -OEChem-05172421153D

 17 17  0     0  0  0  0  0  0999 V2000
  -63.3010   57.1710  137.8040 O   0  0  0  0  0  0  0  0  0  0  0  0
  -63.4640   58.3960  137.6170 C   0  0  0  0  0  0  0  0  0  0  0  0
  -62.8590   59.1480  136.4900 C   0  0  0  0  0  0  0  0  0  0  0  0
  -62.0730   58.5530  135.5570 N   0  3  0  0  0  0  0  0  0  0  0  0
  -61.5910   59.2220  134.6450 O   0  5  0  0  0  0  0  0  0  0  0  0
  -61.8380   57.3470  135.6080 O   0  0  0  0  0  0  0  0  0  0  0  0
  -64.2340   59.0850  138.4720 N   0  0  0  0  0  0  0  0  0  0  0  0
  -64.4710   60.4120  138.3730 C   0  0  0  0  0  0  0  0  0  0  0  0
  -65.2540   60.9940  139.3090 N   0  0  0  0  0  0  0  0  0  0  0  0
  -63.9480   61.1570  137.3690 N   0  0  0  0  0  0  0  0  0  0  0  0
  -63.1570   60.6040  136.4170 C   0  0  0  0  0  0  0  0  0  0  0  0
  -62.6480   61.3820  135.4200 N   0  0  0  0  0  0  0  0  0  0  0  0
  -64.6580   58.5870  139.2280 H   0  0  0  0  0  0  0  0  0  0  0  0
  -65.3440   61.9710  139.1140 H   0  0  0  0  0  0  0  0  0  0  0  0
  -65.6790   60.5190  140.0800 H   0  0  0  0  0  0  0  0  0  0  0  0
  -62.5230   62.3160  135.7560 H   0  0  0  0  0  0  0  0  0  0  0  0
  -61.7660   61.0130  135.1270 H   0  0  0  0  0  0  0  0  0  0  0  0
  1  2  2  0  0  0  0
  2  3  1  0  0  0  0
  2  7  1  0  0  0  0
  3  4  1  0  0  0  0
  3 11  2  0  0  0  0
  4  5  1  0  0  0  0
  4  6  2  0  0  0  0
  7  8  1  0  0  0  0
  7 13  1  0  0  0  0
  8  9  1  0  0  0  0
  8 10  2  0  0  0  0
  9 14  1  0  0  0  0
  9 15  1  0  0  0  0
 10 11  1  0  0  0  0
 11 12  1  0  0  0  0
 12 16  1  0  0  0  0
 12 17  1  0  0  0  0
M  CHG  2   4   1   5  -1
M  END
> <OPENEYE_ISO_SMILES>
c1(c(nc([nH]c1=O)N)N)[N+](=O)[O-]

> <OPENEYE_INCHI>
InChI=1S/C4H5N5O3/c5-2-1(9(11)12)3(10)8-4(6)7-2/h(H5,5,6,7,8,10)

> <OPENEYE_INCHIKEY>
XNFGVBWYGFPSDN-UHFFFAOYSA-N

> <FORMULA>
C4H5N5O3

$$$$