Task: Please answer the following question about the molecule with SMILES Cn1cnc([N+](=O)[O-])c1Sc1ncnc2[nH]cnc12.
Question: Please provide a description of this drug's mechanism of action.
Answer: Amidophosphoribosyltransferase inhibitor
Task: Please answer the following question about the molecule with {SMILES__description} {SMILES#}.
{#Description|Question|Request!}: {quest#}
{#Result|Answer|Completion!}: {answ#}
Cn1cnc([N+](=O)[O-])c1Sc1ncnc2[nH]cnc12
Cn1cnc([N+](=O)[O-])c1Sc1ncnc2[nH]cnc12
6-(3-methyl-5-nitro-imidazol-4-yl)sulfanyl-9H-purine
Please provide a description of this drug's mechanism of action.