National Drug Data File	LipidOntology	Source
http://purl.obolibrary.org/obo/LION_0000544	http://purl.bioontology.org/ontology/NDDF/017882	LOOM
http://purl.obolibrary.org/obo/LION_0015122	http://purl.bioontology.org/ontology/NDDF/007351	LOOM
http://purl.obolibrary.org/obo/LION_0000541	http://purl.bioontology.org/ontology/NDDF/002556	LOOM