The following DataNodes have no identifier: 5
http://classic.wikipathways.org/instance/WP3224_r117618 http://rdf.wikipathways.org/Pathway/WP3224_r117618/DataNode/c1936 (ADP)
http://classic.wikipathways.org/instance/WP3224_r117618 http://rdf.wikipathways.org/Pathway/WP3224_r117618/DataNode/fde94 (ATP)
http://classic.wikipathways.org/instance/WP3224_r117618 http://rdf.wikipathways.org/Pathway/WP3224_r117618/DataNode/de755 (CLTCL1)
http://classic.wikipathways.org/instance/WP3224_r117618 http://rdf.wikipathways.org/Pathway/WP3224_r117618/DataNode/a5502 (CPLX1)
http://classic.wikipathways.org/instance/WP3224_r117618 http://rdf.wikipathways.org/Pathway/WP3224_r117618/DataNode/dd404 (Glutamate)
More details at https://www.wikipathways.org/WikiPathwaysCurator/DataNodesTests/dataNodesWithoutIdentifier