Question: Which USAN substem can this drug or clinical candidate name be matched with?
 The Compound can be represented with the SMILES Nc1nc(=O)n([C@@H]2CS[C@H](CO)O2)cc1F.
Answer: -citabine
{#Question|Q!}: {quest#}
{#Constraint:|Description:|!} The {#Molecule|Compound|Chemical!} {#has the|can be represented with the!} {SMILES__description} {SMILES#}.
{#Answer|Result|Answer!}: {answ#}
Nc1nc(=O)n([C@@H]2CS[C@H](CO)O2)cc1F
Nc1nc(=O)n([C@@H]2CS[C@H](CO)O2)cc1F
4-amino-5-fluoro-1-[(2R,5S)-2-(hydroxymethyl)-1,3-oxathiolan-5-yl]pyrimidin-2-one
Which USAN substem can this drug or clinical candidate name be matched with?