(20S)-hydroxypregn-4-en-3-one + NAD(+) = progesterone + NADH + H(+)
(20s)-hydroxypregn-4-en-3-one + nad(+) = progesterone + nadh + h(+)
(20S)-hydroxypregn-4-en-3-one + NAD(+) = progesterone + NADH + H(+)
(20s)-hydroxypregn-4-en-3-one + nad(+) = progesterone + nadh + h(+)