androst-4-ene-3,17-dione + NADH + H(+) => testosterone + NAD(+)
androst-4-ene-3,17-dione + nadh + h(+) => testosterone + nad(+)
androst-4-ene-3,17-dione + NADH + H(+) => testosterone + NAD(+)
androst-4-ene-3,17-dione + nadh + h(+) => testosterone + nad(+)