P1R
  -OEChem-06212418113D

 10 10  0     0  0  0  0  0  0999 V2000
    0.0000   -1.3630    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0
    1.1900   -0.6540    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0
    1.1520    0.6690    0.0000 N   0  0  0  0  0  0  0  0  0  0  0  0
   -1.1910   -0.6530    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0
   -1.1510    0.6700    0.0000 N   0  0  0  0  0  0  0  0  0  0  0  0
    0.0000    1.3110    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0
   -0.0010   -2.4430    0.0040 H   0  0  0  0  0  0  0  0  0  0  0  0
    2.1370   -1.1740    0.0000 H   0  0  0  0  0  0  0  0  0  0  0  0
   -2.1380   -1.1720   -0.0010 H   0  0  0  0  0  0  0  0  0  0  0  0
    0.0010    2.3910    0.0000 H   0  0  0  0  0  0  0  0  0  0  0  0
  1  2  1  0  0  0  0
  1  4  2  0  0  0  0
  1  7  1  0  0  0  0
  2  3  2  0  0  0  0
  2  8  1  0  0  0  0
  3  6  1  0  0  0  0
  4  5  1  0  0  0  0
  4  9  1  0  0  0  0
  5  6  2  0  0  0  0
  6 10  1  0  0  0  0
M  END
> <OPENEYE_ISO_SMILES>
c1cncnc1

> <OPENEYE_INCHI>
InChI=1S/C4H4N2/c1-2-5-4-6-3-1/h1-4H

> <OPENEYE_INCHIKEY>
CZPWVGJYEJSRLH-UHFFFAOYSA-N

> <FORMULA>
C4H4N2

$$$$