GUN
  -OEChem-04052416303D

 16 17  0     0  0  0  0  0  0999 V2000
    1.5100   -0.0000   -1.7870 N   0  0  0  0  0  0  0  0  0  0  0  0
    0.5190   -0.0000   -2.7250 C   0  0  0  0  0  0  0  0  0  0  0  0
   -0.6420    0.0000   -2.1390 N   0  0  0  0  0  0  0  0  0  0  0  0
   -0.4660    0.0000   -0.7950 C   0  0  0  0  0  0  0  0  0  0  0  0
   -1.3450    0.0010    0.3130 C   0  0  0  0  0  0  0  0  0  0  0  0
   -2.5540    0.0010    0.1520 O   0  0  0  0  0  0  0  0  0  0  0  0
   -0.8120   -0.0040    1.5540 N   0  0  0  0  0  0  0  0  0  0  0  0
    0.5400    0.0000    1.7230 C   0  0  0  0  0  0  0  0  0  0  0  0
    1.0530    0.0010    2.9960 N   0  0  0  0  0  0  0  0  0  0  0  0
    1.3670    0.0000    0.7010 N   0  0  0  0  0  0  0  0  0  0  0  0
    0.9120    0.0000   -0.5560 C   0  0  0  0  0  0  0  0  0  0  0  0
    2.4640   -0.0010   -1.9610 H   0  0  0  0  0  0  0  0  0  0  0  0
    0.6750   -0.0000   -3.7940 H   0  0  0  0  0  0  0  0  0  0  0  0
   -1.3950   -0.0040    2.3300 H   0  0  0  0  0  0  0  0  0  0  0  0
    2.0130    0.0000    3.1310 H   0  0  0  0  0  0  0  0  0  0  0  0
    0.4550    0.0050    3.7590 H   0  0  0  0  0  0  0  0  0  0  0  0
  1  2  1  0  0  0  0
  1 11  1  0  0  0  0
  1 12  1  0  0  0  0
  2  3  2  0  0  0  0
  2 13  1  0  0  0  0
  3  4  1  0  0  0  0
  4  5  1  0  0  0  0
  4 11  2  0  0  0  0
  5  6  2  0  0  0  0
  5  7  1  0  0  0  0
  7  8  1  0  0  0  0
  7 14  1  0  0  0  0
  8  9  1  0  0  0  0
  8 10  2  0  0  0  0
  9 15  1  0  0  0  0
  9 16  1  0  0  0  0
 10 11  1  0  0  0  0
M  END
> <OPENEYE_ISO_SMILES>
c1[nH]c2c(n1)c(=O)[nH]c(n2)N

> <OPENEYE_INCHI>
InChI=1S/C5H5N5O/c6-5-9-3-2(4(11)10-5)7-1-8-3/h1H,(H4,6,7,8,9,10,11)

> <OPENEYE_INCHIKEY>
UYTPUPDQBNUYGX-UHFFFAOYSA-N

> <FORMULA>
C5H5N5O

$$$$
