&FORCE_EVAL
  METHOD FIST
  &MM
    &FORCEFIELD
      parm_file_name ../sample_pot/arginine.pot
      parmtype CHM
    &END FORCEFIELD
    &POISSON
      &EWALD
        EWALD_TYPE ewald
        ALPHA .36
        GMAX 29
      &END EWALD
    &END POISSON
    &PRINT
      &FF_INFO
        SPLINE_INFO
      &END
    &END
  &END MM
  &SUBSYS
    &CELL
      ABC 30.0 30.0 30.0
    &END CELL
    &TOPOLOGY
      CHARGE_BETA
      COORD_FILE_NAME ../sample_pdb/arginine.pdb
      COORDINATE PDB
      &DUMP_PDB
      &END
      &DUMP_PSF
      &END
      &GENERATE
         &BOND ADD
           ATOMS 16 15
         &END
         &BOND ADD
           ATOMS 16 15
         &END
         &BOND REMOVE
           ATOMS 16 15
         &END
         &BOND REMOVE
           ATOMS 16 15
         &END
         &ANGLE REMOVE
           ATOMS 13 12 14
         &END
         &ANGLE ADD
           ATOMS 14 12 13
         &END
         &TORSION ADD
           ATOMS 23 20 17 14
         &END
         &TORSION REMOVE
           ATOMS 23 20 17 14
         &END
         &IMPROPER REMOVE
           ATOMS 26 28 27 25
           ATOMS 29 30 31 25
         &END 
         &IMPROPER ADD
           ATOMS 26 28 27 25
           ATOMS 29 30 31 25
         &END 
      &END
    &END TOPOLOGY
  &END SUBSYS
&END FORCE_EVAL
&GLOBAL
  PROJECT arginine_crossC
  PRINT_LEVEL LOW
  RUN_TYPE md
&END GLOBAL
&MOTION
  &MD
    ENSEMBLE NVE
    STEPS 10
    TIMESTEP 2.5
    TEMPERATURE 298
    TEMP_TOL 298
  &END MD
&END MOTION
