Task: Please answer the following question about the molecule with SMILES C#C[C@@]1(CO)C=C[C@H](n2cc(C)c(=O)[nH]c2=O)O1.
Question: Which USAN substem can this drug or clinical candidate name be matched with?
Result: -vudine
Task: Please answer the following question about the molecule with {SMILES__description} {SMILES#}.
{#Description|Question|Request!}: {quest#}
{#Result|Answer|Completion!}: {answ#}
C#C[C@@]1(CO)C=C[C@H](n2cc(C)c(=O)[nH]c2=O)O1
C#C[C@@]1(CO)C=C[C@H](n2cc(C)c(=O)[nH]c2=O)O1
1-[(2R,5R)-5-ethynyl-5-(hydroxymethyl)-2H-furan-2-yl]-5-methylpyrimidine-2,4-dione
Which USAN substem can this drug or clinical candidate name be matched with?
-vudine