<ForceField>
 <AtomTypes>
  <Type name="swm4ndp-O" class="OW" element="O" mass="15.59943"/>
  <Type name="swm4ndp-H" class="HW" element="H" mass="1.007947"/>
  <Type name="swm4ndp-M" class="MW" mass="0"/>
  <Type name="swm4ndp-OD" class="OWD" mass="0.4"/>
 </AtomTypes>
 <Residues>
  <Residue name="HOH">
   <Atom name="O" type="swm4ndp-O"/>
   <Atom name="H1" type="swm4ndp-H"/>
   <Atom name="H2" type="swm4ndp-H"/>
   <Atom name="M" type="swm4ndp-M"/>
   <Atom name="OD" type="swm4ndp-OD"/>
   <VirtualSite type="average3" index="3" atom1="0" atom2="1" atom3="2" weight1="0.589781071" weight2="0.2051094645" weight3="0.2051094645"/>
   <Bond from="0" to="1"/>
   <Bond from="0" to="2"/>
  </Residue>
 </Residues>
 <HarmonicBondForce>
  <Bond class1="OW" class2="HW" length="0.09572" k="462750.4"/>
 </HarmonicBondForce>
 <HarmonicAngleForce>
  <Angle class1="HW" class2="OW" class3="HW" angle="1.82421813418" k="836.8"/>
 </HarmonicAngleForce>
 <NonbondedForce coulomb14scale="0.833333" lj14scale="0.5">
  <Atom type="swm4ndp-O" charge="1.71636" sigma="0.318395" epsilon="0.882573"/>
  <Atom type="swm4ndp-H" charge="0.55733" sigma="1" epsilon="0"/>
  <Atom type="swm4ndp-M" charge="-1.11466" sigma="1" epsilon="0"/>
  <Atom type="swm4ndp-OD" charge="-1.71636" sigma="1" epsilon="0"/>
 </NonbondedForce>
 <DrudeForce>
  <Particle type1="swm4ndp-OD" type2="swm4ndp-O" charge="-1.71636" polarizability="7.040850e-6" thole="1.3"/>
 </DrudeForce>
</ForceField>

