N2 + (E)-4-coumarate + NAD(+) => (E)-3-diazocoumarate + NADH
n2 + (e)-4-coumarate + nad(+) => (e)-3-diazocoumarate + nadh
N2 + (E)-4-coumarate + NAD(+) => (E)-3-diazocoumarate + NADH
n2 + (e)-4-coumarate + nad(+) => (e)-3-diazocoumarate + nadh