The following DataNodes have no identifier: 7
http://www.wikipathways.org/instance/WP1086_rr117457 http://rdf.wikipathways.org/Pathway/WP1086_rr117457/DataNode/d76 (CPOX)
http://www.wikipathways.org/instance/WP1086_rr117457 http://rdf.wikipathways.org/Pathway/WP1086_rr117457/DataNode/d92 (coproporphyrinogen III)
http://www.wikipathways.org/instance/WP1086_rr117457 http://rdf.wikipathways.org/Pathway/WP1086_rr117457/DataNode/db0 (hydroxymethylbilane)
http://www.wikipathways.org/instance/WP1086_rr117457 http://rdf.wikipathways.org/Pathway/WP1086_rr117457/DataNode/ad4 (porphobilinogen)
http://www.wikipathways.org/instance/WP1086_rr117457 http://rdf.wikipathways.org/Pathway/WP1086_rr117457/DataNode/f4c (protoheme)
http://www.wikipathways.org/instance/WP1086_rr117457 http://rdf.wikipathways.org/Pathway/WP1086_rr117457/DataNode/fb1 (protoporphyrin IX)
http://www.wikipathways.org/instance/WP1086_rr117457 http://rdf.wikipathways.org/Pathway/WP1086_rr117457/DataNode/cae (uroporphyrinogen III)