(R)-isodihydrodehydrodiconiferyl alcohol + NADP(+) => (+)-dehydrodiconiferyl alcohol + NADPH + H(+)
(r)-isodihydrodehydrodiconiferyl alcohol + nadp(+) => (+)-dehydrodiconiferyl alcohol + nadph + h(+)
(R)-isodihydrodehydrodiconiferyl alcohol + NADP(+) => (+)-dehydrodiconiferyl alcohol + NADPH + H(+)
(r)-isodihydrodehydrodiconiferyl alcohol + nadp(+) => (+)-dehydrodiconiferyl alcohol + nadph + h(+)