(24R,25R)-3alpha,7alpha,12alpha,24-tetrahydroxy-5beta-cholestan-26-oyl-CoA + NAD(+) => 3alpha,7alpha,12alpha-trihydroxy-24-oxo-5beta-cholestan-26-oyl-CoA + NADH + H(+)
(24r,25r)-3alpha,7alpha,12alpha,24-tetrahydroxy-5beta-cholestan-26-oyl-coa + nad(+) => 3alpha,7alpha,12alpha-trihydroxy-24-oxo-5beta-cholestan-26-oyl-coa + nadh + h(+)