The following DataNodes have no identifier: 2
http://classic.wikipathways.org/instance/WP4725_r128379 http://rdf.wikipathways.org/Pathway/WP4725_r128379/DataNode/b12b3 (CoA(26:1))
http://classic.wikipathways.org/instance/WP4725_r128379 http://rdf.wikipathways.org/Pathway/WP4725_r128379/DataNode/b6b95 (CoA(26:1))
More details at https://www.wikipathways.org/WikiPathwaysCurator/DataNodesTests/dataNodesWithoutIdentifier