Task: Please answer the following question about the molecule with SMILES O=c1[nH]cnc2c1ncn2[C@H]1CC[C@@H](CO)O1.
Description: Determine if this drug is administered as a racemic mixture, a single stereoisomer, an achiral molecule, or has an unknown chirality.
Completion: Single stereoisomer
Task: Please answer the following question about the molecule with {SMILES__description} {SMILES#}.
{#Description|Question|Request!}: {quest#}
{#Result|Answer|Completion!}: {answ#}
O=c1[nH]cnc2c1ncn2[C@H]1CC[C@@H](CO)O1
O=c1[nH]cnc2c1ncn2[C@H]1CC[C@@H](CO)O1
9-[(2R,5S)-5-(hydroxymethyl)oxolan-2-yl]-1H-purin-6-one
Determine if this drug is administered as a racemic mixture, a single stereoisomer, an achiral molecule, or has an unknown chirality.