Tetraphosphorus
  Mrv2108 09232107512D          

  4  6  0  0  0  0            999 V2000
   -0.2196    0.2357    0.0000 P   0  0  0  0  0  0  0  0  0  0  0  0
    0.4500   -0.1982    0.0000 P   0  0  0  0  0  0  0  0  0  0  0  0
    1.0714    0.2946    0.0000 P   0  0  0  0  0  0  0  0  0  0  0  0
    0.4446    1.0125    0.0000 P   0  0  0  0  0  0  0  0  0  0  0  0
  1  2  1  0  0  0  0
  2  3  1  0  0  0  0
  1  3  1  0  0  0  0
  3  4  1  0  0  0  0
  1  4  1  0  0  0  0
  2  4  1  0  0  0  0
M  END
>  <type>
common

$$$$
