LAMMPS CH4 molecule file
 1 atoms
 0 bonds
 0 angles
 0 dihedrals
 0 impropers
 16.04 mass
 0.0 0.0 0.0 com
 0.0 0.0 0.0 0.0 0.0 0.0 inertia

 Coords

 1 0.908 0.377 6.182

 Types

 1 2

 Masses

 1 16.04