Task: Answer the following question about the molecule with SMILES COC(=O)N1CCC(CC#Cc2nc(N)c3ncn([C@@H]4O[C@H](C(=O)NC5CC5)[C@@H](O)[C@H]4O)c3n2)CC1.
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: Answer the following question about the molecule with {SMILES__description} {SMILES#}.
{#Description|Question|Request!}: {quest#}
{#Result|Answer|Completion!}: {answ#}
COC(=O)N1CCC(CC#Cc2nc(N)c3ncn([C@@H]4O[C@H](C(=O)NC5CC5)[C@@H](O)[C@H]4O)c3n2)CC1
COC(=O)N1CCC(CC#Cc2nc(N)c3ncn([C@@H]4O[C@H](C(=O)NC5CC5)[C@@H](O)[C@H]4O)c3n2)CC1
methyl 4-[3-[6-amino-9-[(2R,3R,4S,5S)-5-(cyclopropylcarbamoyl)-3,4-dihydroxyoxolan-2-yl]purin-2-yl]prop-2-ynyl]piperidine-1-carboxylate
Determine if this drug is administered as a racemic mixture, a single stereoisomer, an achiral molecule, or has an unknown chirality.