spermidine + NAD(+) => dehydrospermidine + NADH + H(+)
spermidine + nad(+) => dehydrospermidine + nadh + h(+)
spermidine + NAD(+) => dehydrospermidine + NADH + H(+)
spermidine + nad(+) => dehydrospermidine + nadh + h(+)