a (3R,4R)-4,2'-dihydroxyisoflavan + NADP(+) => a (3R)-2'-hydroxyisoflavanone + NADPH + H(+)
a (3r,4r)-4,2'-dihydroxyisoflavan + nadp(+) => a (3r)-2'-hydroxyisoflavanone + nadph + h(+)
a (3R,4R)-4,2'-dihydroxyisoflavan + NADP(+) => a (3R)-2'-hydroxyisoflavanone + NADPH + H(+)
a (3r,4r)-4,2'-dihydroxyisoflavan + nadp(+) => a (3r)-2'-hydroxyisoflavanone + nadph + h(+)