(R)-pulegone + NADPH + H(+) => (1R,4S)-menthone + NADP(+)
(r)-pulegone + nadph + h(+) => (1r,4s)-menthone + nadp(+)
(R)-pulegone + NADPH + H(+) => (1R,4S)-menthone + NADP(+)
(r)-pulegone + nadph + h(+) => (1r,4s)-menthone + nadp(+)