precorrin-2 + NAD(+) => sirohydrochlorin + NADH + 2 H(+)
precorrin-2 + nad(+) => sirohydrochlorin + nadh + 2 h(+)
precorrin-2 + NAD(+) => sirohydrochlorin + NADH + 2 H(+)
precorrin-2 + nad(+) => sirohydrochlorin + nadh + 2 h(+)