Task: Answer the following question about the molecule with SMILES S=P(N1CC1)(N1CC1)N1CC1.
Description: Please provide a description of this drug's mechanism of action.
Result: DNA inhibitor
Task: Answer the following question about the molecule with {SMILES__description} {SMILES#}.
{#Description|Question|Request!}: {quest#}
{#Result|Answer|Completion!}: {answ#}
S=P(N1CC1)(N1CC1)N1CC1
S=P(N1CC1)(N1CC1)N1CC1
tris(aziridin-1-yl)-sulfanylidene-λ5-phosphane
Please provide a description of this drug's mechanism of action.