Question: Please describe this drug.
Constraint: The Molecule can be represented with the SMILES NCCCCNCCCN.
Result: Spermidine is a metabolite found in or produced by Escherichia coli (strain K12, MG1655).
{#Question|Q!}: {quest#}
{#Constraint:|Description:|!} The {#Molecule|Compound|Chemical!} {#has the|can be represented with the!} {SMILES__description} {SMILES#}.
{#Answer|Result|Answer!}: {answ#}
NCCCCNCCCN
C(CCNCCCN)CN
N'-(3-aminopropyl)butane-1,4-diamine
Please describe this drug.