label: 7alpha,12alpha-dihydroxy-3-oxochol-24-oyl-CoA + NAD(+) => 7alpha,12alpha-dihydroxy-3-oxochol-4-en-24-oyl-CoA + NADH + H(+)
label_lc: 7alpha,12alpha-dihydroxy-3-oxochol-24-oyl-coa + nad(+) => 7alpha,12alpha-dihydroxy-3-oxochol-4-en-24-oyl-coa + nadh + h(+)