5NU
  -OEChem-05102419293D

 14 14  0     0  0  0  0  0  0999 V2000
   -0.5120   -2.0370    0.0020 O   0  0  0  0  0  0  0  0  0  0  0  0
    0.1150   -0.9930    0.0020 C   0  0  0  0  0  0  0  0  0  0  0  0
    1.4630   -1.0100   -0.0010 N   0  0  0  0  0  0  0  0  0  0  0  0
    2.1550    0.1450   -0.0010 C   0  0  0  0  0  0  0  0  0  0  0  0
    3.3710    0.1150   -0.0040 O   0  0  0  0  0  0  0  0  0  0  0  0
    1.5210    1.3310    0.0020 N   0  0  0  0  0  0  0  0  0  0  0  0
    0.1540    1.3910    0.0060 C   0  0  0  0  0  0  0  0  0  0  0  0
   -0.5650    0.2480    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0
   -2.0450    0.2930   -0.0020 N   0  3  0  0  0  0  0  0  0  0  0  0
   -2.6210    1.3660   -0.0030 O   0  0  0  0  0  0  0  0  0  0  0  0
   -2.6850   -0.7420   -0.0010 O   0  5  0  0  0  0  0  0  0  0  0  0
    1.9360   -1.8570   -0.0030 H   0  0  0  0  0  0  0  0  0  0  0  0
   -0.3470    2.3480    0.0090 H   0  0  0  0  0  0  0  0  0  0  0  0
    2.0380    2.1520    0.0020 H   0  0  0  0  0  0  0  0  0  0  0  0
  9 11  1  0  0  0  0
  9 10  2  0  0  0  0
  8  9  1  0  0  0  0
  1  2  2  0  0  0  0
  2  8  1  0  0  0  0
  7  8  2  0  0  0  0
  2  3  1  0  0  0  0
  6  7  1  0  0  0  0
  3  4  1  0  0  0  0
  4  6  1  0  0  0  0
  4  5  2  0  0  0  0
  3 12  1  0  0  0  0
  7 13  1  0  0  0  0
  6 14  1  0  0  0  0
M  CHG  2   9   1  11  -1
M  END
> <OPENEYE_ISO_SMILES>
c1c(c(=O)[nH]c(=O)[nH]1)[N+](=O)[O-]

> <OPENEYE_INCHI>
InChI=1S/C4H3N3O4/c8-3-2(7(10)11)1-5-4(9)6-3/h1H,(H2,5,6,8,9)

> <OPENEYE_INCHIKEY>
TUARVSWVPPVUGS-UHFFFAOYSA-N

> <FORMULA>
C4H3N3O4

$$$$