The following DataNodes have no identifier: 2
http://classic.wikipathways.org/instance/WP2886_r106102 http://rdf.wikipathways.org/Pathway/WP2886_r106102/DataNode/c5027 (4ABH
(muschroom))
http://classic.wikipathways.org/instance/WP2886_r106102 http://rdf.wikipathways.org/Pathway/WP2886_r106102/DataNode/ce3fc (4ABH
(muschroom))
More details at https://www.wikipathways.org/WikiPathwaysCurator/DataNodesTests/dataNodesWithoutIdentifier