density 
 &cntrl
  imin=0,irest=1,ntx=5,
  nstlim=50000,dt=0.001,
  ntc=2,ntf=2,
  cut=10.0, ntb=2, ntp=1, taup=1.0,
  ntpr=5000, ntwx=5000,
  ntt=3, gamma_ln=2.0,
  temp0=300.0,
  ntr=1, restraintmask=':1-190',
  restraint_wt=2.0,
 /

