| Label | Id | |
|---|---|---|
| bicyclic compounds | http://purl.obolibrary.org/obo/CHEBI_33636 | |
| ortho-fused compound | http://purl.obolibrary.org/obo/CHEBI_33637 | |
| ortho-fused compounds | http://purl.obolibrary.org/obo/CHEBI_33637 | |
| ortho-fused polycyclic compounds | http://purl.obolibrary.org/obo/CHEBI_33637 | |
| ortho- and peri-fused compound | http://purl.obolibrary.org/obo/CHEBI_33639 | |
| ortho- and peri-fused compounds | http://purl.obolibrary.org/obo/CHEBI_33639 | |
| ortho- and peri-fused polycyclic compounds | http://purl.obolibrary.org/obo/CHEBI_33639 |
