Task: Answer the following question about the molecule with SMILES CCNC(=O)[C@H]1O[C@@H](n2cnc3c(N)nc(C#CC[C@H]4CC[C@H](C(=O)OC)CC4)nc32)[C@H](O)[C@@H]1O.
Request: What is the definition of this compound's USAN stem?
Answer: adenosine A receptor agonists
Task: Answer the following question about the molecule with {SMILES__description} {SMILES#}.
{#Description|Question|Request!}: {quest#}
{#Result|Answer|Completion!}: {answ#}
CCNC(=O)[C@H]1O[C@@H](n2cnc3c(N)nc(C#CC[C@H]4CC[C@H](C(=O)OC)CC4)nc32)[C@H](O)[C@@H]1O
CCNC(=O)[C@H]1O[C@@H](n2cnc3c(N)nc(C#CC[C@H]4CC[C@H](C(=O)OC)CC4)nc32)[C@H](O)[C@@H]1O
methyl 4-[3-[6-amino-9-[(2R,3R,4S,5S)-5-(ethylcarbamoyl)-3,4-dihydroxyoxolan-2-yl]purin-2-yl]prop-2-ynyl]cyclohexane-1-carboxylate
What is the definition of this compound's USAN stem?