Term Name:	penem
Synonyms:	(5R)-4-thia-1-azabicyclo[3.2.0]hept-2-en-7-one, 2,3-didehydropenam
Definition:	An organic heterobicyclic compound that consists of (5R)-4-thia-1-azabicyclo[3.2.0]hept-2-ene bearing a 7-keto substituent. The parent of the class of penems.
Ontology:	ChEBI [CHEBI:35994]  ( EBI )