721727
  -OEChem-02060822472D

 11 11  0     0  0  0  0  0  0999 V2000
    0.3505   -0.6803    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0
    0.2993   -2.1206    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0
    1.0706   -1.4522    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0
   -0.4206   -1.4522    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0
    2.1508   -1.4522    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0
   -0.1123    0.1937    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0
    0.6593    0.2964    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0
   -0.1123   -3.0981    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0
    0.6079   -3.0981    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0
    3.1798   -1.4522    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0
    3.8219   -1.4519    0.0000 H   0  0  0  0  0  0  0  0  0  0  0  0
  1  3  1  0  0  0  0
  1  4  1  0  0  0  0
  1  6  1  0  0  0  0
  1  7  1  0  0  0  0
  2  3  1  0  0  0  0
  2  4  1  0  0  0  0
  2  8  1  0  0  0  0
  2  9  1  0  0  0  0
  3  5  1  0  0  0  0
  5 10  3  0  0  0  0
 10 11  1  0  0  0  0
M  END
> <PUBCHEM_COMPOUND_ID_TYPE>
0

> <PUBCHEM_TOTAL_CHARGE>
0

> <PUBCHEM_SUBSTANCE_ID>
721727

> <PUBCHEM_SUBSTANCE_VERSION>
3

> <PUBCHEM_EXT_DATASOURCE_NAME>
ChemIDplus

> <PUBCHEM_EXT_DATASOURCE_REGID>
066438899

> <PUBCHEM_SUBSTANCE_SYNONYM>
66438-89-9
Cyclobutane, 2-ethynyl-1,1,3,3-tetramethyl-

> <PUBCHEM_GENERIC_REGISTRY_NAME>
66438-89-9

> <PUBCHEM_XREF_EXT_ID>
066438899

> <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=066438899

> <PUBCHEM_CID_ASSOCIATIONS>
144183  1

$$$$