label: 3beta,7beta-dihydroxy-5beta-cholan-24-oate + NAD(+) <=> 3beta-hydroxy-7-oxo-5beta-cholan-24-oate + NADH + H(+)
label_lc: 3beta,7beta-dihydroxy-5beta-cholan-24-oate + nad(+) <=> 3beta-hydroxy-7-oxo-5beta-cholan-24-oate + nadh + h(+)