CH4 Trappe GCMC starting configuration
         0         1
 30.0  0.0  0.0
  0.0 30.0  0.0
  0.0  0.0 30.0
NUMMOL 1 1000
MOLECULE ch4 5 5
C core 
 0.00 0.00 0.00
M core 
 0.51854497 0.0 -0.1833333
M core 
 -0.2592725 0.44907312 -0.1833333
M core
 -0.2592725 -0.44907312 -0.1833333
M core 
 0.00 0.00 0.55

