CHEMROF	Name Reaction Ontology	Source
https://w3id.org/chemrof/Atom	http://purl.obolibrary.org/obo/CHEBI_33250	LOOM
https://w3id.org/chemrof/Peptide	http://purl.obolibrary.org/obo/CHEBI_16670	LOOM
https://w3id.org/chemrof/Ester	http://purl.obolibrary.org/obo/CHEBI_35701	LOOM
https://w3id.org/chemrof/ChemicalEntity	http://purl.obolibrary.org/obo/CHEBI_24431	LOOM
https://w3id.org/chemrof/Macromolecule	http://purl.obolibrary.org/obo/CHEBI_33839	LOOM