Task: Answer the following question about the molecule with SMILES C[C@@H](O)[C@H]1C(=O)N2C(C(=O)O)=C([C@H]3CCCO3)S[C@H]12.
Request: Which USAN substem can this drug or clinical candidate name be matched with?
Completion: -penem
Task: Answer the following question about the molecule with {SMILES__description} {SMILES#}.
{#Description|Question|Request!}: {quest#}
{#Result|Answer|Completion!}: {answ#}
C[C@@H](O)[C@H]1C(=O)N2C(C(=O)O)=C([C@H]3CCCO3)S[C@H]12
C[C@@H](O)[C@H]1C(=O)N2C(C(=O)O)=C([C@H]3CCCO3)S[C@H]12
(5R,6S)-6-[(1R)-1-hydroxyethyl]-7-oxo-3-[(2R)-oxolan-2-yl]-4-thia-1-azabicyclo[3.2.0]hept-2-ene-2-carboxylic acid
Which USAN substem can this drug or clinical candidate name be matched with?
-penem