[gmx-users] force field optimization

[Дмитрий Зленко]

     Hi there!
  I'm interested in obtainning force field parameters from quantum-chemical calculations. I have a Hessian (I can calculate it using any coordinates set), what should I do then? Actualy, I need to automate process of minimization of variances between QM potential energy surface and mechanical one. So, may be somewhere exists some software, which is able to help me? 
  As I understood, ffscan can do something close. But I do understand nothing about the format of *.dat file for this utility.
  HELP!