| Label | Id | |
|---|---|---|
| pnictogen molecular entity | http://purl.obolibrary.org/obo/CHEBI_33302 | |
| chalcogen molecular entity | http://purl.obolibrary.org/obo/CHEBI_33304 | |
| tellurium molecular entity | http://purl.obolibrary.org/obo/CHEBI_33305 | |
| a carboxylic ester | http://purl.obolibrary.org/obo/CHEBI_33308 | |
| carboxylic acid esters | http://purl.obolibrary.org/obo/CHEBI_33308 |
