<?xml version="1.0" standalone="yes"?>
<!-- A planar-chiral metacyclophane -->
<molecule>
  <constitution>
    <atoms>
      <atom id="1" symbol="C" hydrogens="3" ionization="4"></atom>
      <atom id="2" symbol="C" hydrogens="0" ionization="4"></atom>
      <atom id="3" symbol="C" hydrogens="0" ionization="4"></atom>
      <atom id="4" symbol="C" hydrogens="2" ionization="4"></atom>
      <atom id="5" symbol="O" hydrogens="0" ionization="2"></atom>
      <atom id="6" symbol="C" hydrogens="2" ionization="4"></atom>
      <atom id="7" symbol="C" hydrogens="0" ionization="4"></atom>
      <atom id="8" symbol="C" hydrogens="0" ionization="4"></atom>
      <atom id="9" symbol="C" hydrogens="0" ionization="4"></atom>
      <atom id="10" symbol="C" hydrogens="0" ionization="4"></atom>
      <atom id="11" symbol="C" hydrogens="2" ionization="4"></atom>
      <atom id="12" symbol="O" hydrogens="0" ionization="2"></atom>
      <atom id="13" symbol="C" hydrogens="2" ionization="4"></atom>
      <atom id="14" symbol="C" hydrogens="2" ionization="4"></atom>
      <atom id="15" symbol="C" hydrogens="2" ionization="4"></atom>
      <atom id="16" symbol="O" hydrogens="0" ionization="2"></atom>
      <atom id="17" symbol="C" hydrogens="2" ionization="4"></atom>
      <atom id="18" symbol="C" hydrogens="2" ionization="4"></atom>
      <atom id="19" symbol="O" hydrogens="0" ionization="2"></atom>
      <atom id="20" symbol="C" hydrogens="3" ionization="4"></atom>
    </atoms>
    <bonding>
      <bond source="1" target="2" bondingElectrons="2"></bond>
      <bond source="2" target="3" bondingElectrons="4"></bond>
      <bond source="2" target="10" bondingElectrons="2"></bond>
      <bond source="3" target="4" bondingElectrons="2"></bond>
      <bond source="3" target="7" bondingElectrons="2"></bond>
      <bond source="4" target="5" bondingElectrons="2"></bond>
      <bond source="5" target="6" bondingElectrons="2"></bond>
      <bond source="6" target="7" bondingElectrons="2"></bond>
      <bond source="7" target="8" bondingElectrons="4"></bond>
      <bond source="8" target="17" bondingElectrons="2"></bond>
      <bond source="8" target="9" bondingElectrons="2"></bond>
      <bond source="9" target="18" bondingElectrons="2"></bond>
      <bond source="9" target="10" bondingElectrons="4"></bond>
      <bond source="10" target="11" bondingElectrons="2"></bond>
      <bond source="11" target="12" bondingElectrons="2"></bond>
      <bond source="12" target="13" bondingElectrons="2"></bond>
      <bond source="13" target="14" bondingElectrons="2"></bond>
      <bond source="14" target="15" bondingElectrons="2"></bond>
      <bond source="15" target="16" bondingElectrons="2"></bond>
      <bond source="16" target="17" bondingElectrons="2"></bond>
      <bond source="18" target="19" bondingElectrons="2"></bond>
      <bond source="19" target="20" bondingElectrons="2"></bond>
    </bonding>
  </constitution>
  <conformation>
    <conformationWheel>
      <gammaSequence source="17" target="8">
        <connections>
          <atomPair source="17" target="8"></atomPair>
        </connections>
      </gammaSequence>
      <halfPlane>
        <lower atom="16"></lower>
      </halfPlane>
      <halfPlane>
        <upper atom="9"></upper>
      </halfPlane>
      <halfPlane></halfPlane>
      <halfPlane>
        <upper atom="7"></upper>
      </halfPlane>
    </conformationWheel>
    <conformationWheel>
      <gammaSequence source="11" target="10">
        <connections>
          <atomPair source="11" target="10"></atomPair>
        </connections>
      </gammaSequence>
      <halfPlane>
        <lower atom="12"></lower>
      </halfPlane>
      <halfPlane>
        <upper atom="2"></upper>
      </halfPlane>
      <halfPlane></halfPlane>
      <halfPlane>
        <upper atom="9"></upper>
      </halfPlane>
    </conformationWheel>
  </conformation>
</molecule>

