UNC
  -OEChem-05102419333D

 16 16  0     0  0  0  0  0  0999 V2000
    2.5490   -1.5480   -0.0900 O   0  0  0  0  0  0  0  0  0  0  0  0
    2.0680   -0.4320    0.0030 N   0  3  0  0  0  0  0  0  0  0  0  0
    2.7970    0.5390    0.0960 O   0  5  0  0  0  0  0  0  0  0  0  0
    0.5980   -0.2580    0.0020 C   0  0  0  0  0  0  0  0  0  0  0  0
   -0.2280   -1.3550    0.0140 N   0  0  0  0  0  0  0  0  0  0  0  0
   -1.5650   -1.2060    0.0120 C   0  0  0  0  0  0  0  0  0  0  0  0
   -2.2770   -2.1910    0.0220 O   0  0  0  0  0  0  0  0  0  0  0  0
    0.0600    0.9840   -0.0110 C   0  0  0  0  0  0  0  0  0  0  0  0
    0.8890    2.1210   -0.0230 N   0  0  0  0  0  0  0  0  0  0  0  0
   -1.3540    1.1220   -0.0060 C   0  0  0  0  0  0  0  0  0  0  0  0
   -1.8630    2.2280   -0.0180 O   0  0  0  0  0  0  0  0  0  0  0  0
   -2.1260    0.0170    0.0000 N   0  0  0  0  0  0  0  0  0  0  0  0
    0.1560   -2.2460    0.0230 H   0  0  0  0  0  0  0  0  0  0  0  0
    1.8500    2.0210    0.0580 H   0  0  0  0  0  0  0  0  0  0  0  0
    0.4990    3.0040   -0.1150 H   0  0  0  0  0  0  0  0  0  0  0  0
   -3.0930    0.1050   -0.0010 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  4  1  0  0  0  0
  4  5  1  0  0  0  0
  4  8  2  0  0  0  0
  5  6  1  0  0  0  0
  5 13  1  0  0  0  0
  6  7  2  0  0  0  0
  6 12  1  0  0  0  0
  8  9  1  0  0  0  0
  8 10  1  0  0  0  0
  9 14  1  0  0  0  0
  9 15  1  0  0  0  0
 10 11  2  0  0  0  0
 10 12  1  0  0  0  0
 12 16  1  0  0  0  0
M  CHG  2   2   1   3  -1
M  END
> <OPENEYE_ISO_SMILES>
c1(c([nH]c(=O)[nH]c1=O)[N+](=O)[O-])N

> <OPENEYE_INCHI>
InChI=1S/C4H4N4O4/c5-1-2(8(11)12)6-4(10)7-3(1)9/h5H2,(H2,6,7,9,10)

> <OPENEYE_INCHIKEY>
CLOSWQFGCBFNCK-UHFFFAOYSA-N

> <FORMULA>
C4H4N4O4

$$$$