| Label | Id | |
|---|---|---|
| (carboxycarbonyl)oxy | http://purl.obolibrary.org/obo/CHEBI_30873 | |
| -O-CO-COOH | http://purl.obolibrary.org/obo/CHEBI_30873 | |
| HOOC-CO-O- | http://purl.obolibrary.org/obo/CHEBI_30873 | |
| oxalooxy | http://purl.obolibrary.org/obo/CHEBI_30873 | |
| oxalooxy group | http://purl.obolibrary.org/obo/CHEBI_30873 |
