28Y
  -OEChem-05102419503D

 18 20  0     0  0  0  0  0  0999 V2000
    2.1800   -4.5400  -25.0610 C   0  0  0  0  0  0  0  0  0  0  0  0
    2.2700   -5.8230  -24.5440 C   0  0  0  0  0  0  0  0  0  0  0  0
    1.6930   -6.1330  -23.3200 C   0  0  0  0  0  0  0  0  0  0  0  0
    3.2870   -5.7680  -26.4410 C   0  0  0  0  0  0  0  0  0  0  0  0
    1.0170   -5.1470  -22.6010 N   0  0  0  0  0  0  0  0  0  0  0  0
    0.3640   -2.7470  -22.6800 N   0  0  0  0  0  0  0  0  0  0  0  0
    1.5060   -3.5480  -24.3510 N   0  0  0  0  0  0  0  0  0  0  0  0
    1.7790   -7.2750  -22.8720 O   0  0  0  0  0  0  0  0  0  0  0  0
    2.9550   -6.5500  -25.4150 N   0  0  0  0  0  0  0  0  0  0  0  0
    2.8150   -4.5400  -26.2270 N   0  0  0  0  0  0  0  0  0  0  0  0
    1.2610   -2.2650  -24.5940 C   0  0  0  0  0  0  0  0  0  0  0  0
    0.5690   -1.7780  -23.5670 C   0  0  0  0  0  0  0  0  0  0  0  0
    0.9280   -3.8570  -23.1250 C   0  0  0  0  0  0  0  0  0  0  0  0
    3.8490   -6.0800  -27.3090 H   0  0  0  0  0  0  0  0  0  0  0  0
    0.6000   -5.3630  -21.7180 H   0  0  0  0  0  0  0  0  0  0  0  0
    3.1830   -7.5190  -25.3190 H   0  0  0  0  0  0  0  0  0  0  0  0
    1.5690   -1.7140  -25.4710 H   0  0  0  0  0  0  0  0  0  0  0  0
    0.2280   -0.7580  -23.4690 H   0  0  0  0  0  0  0  0  0  0  0  0
  4 10  2  0  0  0  0
  4  9  1  0  0  0  0
  1 10  1  0  0  0  0
  2  9  1  0  0  0  0
  1  2  2  0  0  0  0
  1  7  1  0  0  0  0
  7 11  1  0  0  0  0
 11 12  2  0  0  0  0
  2  3  1  0  0  0  0
  7 13  1  0  0  0  0
  6 12  1  0  0  0  0
  3  8  2  0  0  0  0
  3  5  1  0  0  0  0
  6 13  2  0  0  0  0
  5 13  1  0  0  0  0
  4 14  1  0  0  0  0
  5 15  1  0  0  0  0
  9 16  1  0  0  0  0
 11 17  1  0  0  0  0
 12 18  1  0  0  0  0
M  END
> <OPENEYE_ISO_SMILES>
c1cn2c3c(c(=O)[nH]c2n1)[nH]cn3

> <OPENEYE_INCHI>
InChI=1S/C7H5N5O/c13-6-4-5(10-3-9-4)12-2-1-8-7(12)11-6/h1-3H,(H,9,10)(H,8,11,13)

> <OPENEYE_INCHIKEY>
OSXKHFTZRHDUJN-UHFFFAOYSA-N

> <FORMULA>
C7H5N5O

$$$$