precorrin-6B + NADP(+) => precorrin-6A + NADPH + 2 H(+)
precorrin-6b + nadp(+) => precorrin-6a + nadph + 2 h(+)
precorrin-6B + NADP(+) => precorrin-6A + NADPH + 2 H(+)
precorrin-6b + nadp(+) => precorrin-6a + nadph + 2 h(+)