718838
  -OEChem-02060822472D

  5  5  0     0  0  0  0  0  0999 V2000
    1.7544    1.5594    0.0000 O   0  0  0  0  0  0  0  0  0  0  0  0
    1.0234    1.0234    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0
    0.0000    1.0234    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0
    1.0234    0.0000    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0
    0.0000    0.0000    0.0000 C   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
  3  5  2  0  0  0  0
  4  5  1  0  0  0  0
M  END
> <PUBCHEM_COMPOUND_ID_TYPE>
0

> <PUBCHEM_TOTAL_CHARGE>
0

> <PUBCHEM_SUBSTANCE_ID>
718838

> <PUBCHEM_SUBSTANCE_VERSION>
3

> <PUBCHEM_EXT_DATASOURCE_NAME>
ChemIDplus

> <PUBCHEM_EXT_DATASOURCE_REGID>
032264872

> <PUBCHEM_SUBSTANCE_SYNONYM>
2-Cyclobutene-1-one
32264-87-2

> <PUBCHEM_GENERIC_REGISTRY_NAME>
32264-87-2

> <PUBCHEM_XREF_EXT_ID>
032264872

> <PUBCHEM_EXT_DATASOURCE_URL>
http://chem.sis.nlm.nih.gov/chemidplus/

> <PUBCHEM_EXT_SUBSTANCE_URL>
http://chem.sis.nlm.nih.gov/chemidplus/direct.jsp?result=advanced&regno=032264872

> <PUBCHEM_CID_ASSOCIATIONS>
141691  1

$$$$