<ForceField>
 <AtomTypes>
 </AtomTypes>
 <Residues>
 </Residues>
 <HarmonicBondForce>
 </HarmonicBondForce>
 <HarmonicAngleForce>
  <Angle class1="c1" class2="c1" class3="cx" angle="3.11471458311" k="470.95104"/>
  <Angle class1="c1" class2="cx" class3="hc" angle="1.91549885406" k="403.756"/>
 </HarmonicAngleForce>
 <PeriodicTorsionForce>
  <Improper class1="c" class2="n" class3="o" class4="os" periodicity1="2" phase1="3.14159265359" k1="43.932"/>
  <Improper class1="ca" class2="ca" class3="ca" class4="ha" periodicity1="2" phase1="3.14159265359" k1="4.6024"/>
  <Improper class1="ca" class2="ca" class3="ca" class4="n" periodicity1="2" phase1="3.14159265359" k1="4.6024"/>
  <Improper class1="n" class2="c" class3="ca" class4="hn" periodicity1="2" phase1="3.14159265359" k1="4.6024"/>
 </PeriodicTorsionForce>
 <NonbondedForce coulomb14scale="0.833333" lj14scale="0.5">
 </NonbondedForce>
</ForceField>
