<entity chain_ids="A,B" class="protein" count="2" entity_id="1" source_entry="1EDM" type="polymer"/>
<entity chain_ids="C,D,E" class="ligand" count="3" entity_id="2" source_entry="1EDM" type="non-polymer"/>
<entity chain_ids="F,G" class="water" count="2" entity_id="3" source_entry="1EDM" type="water"/>