(16R,19Z)-isositsirikine + NADP(+) => (19E)-geissoschizine + NADPH + H(+)
(16r,19z)-isositsirikine + nadp(+) => (19e)-geissoschizine + nadph + h(+)
(16R,19Z)-isositsirikine + NADP(+) => (19E)-geissoschizine + NADPH + H(+)
(16r,19z)-isositsirikine + nadp(+) => (19e)-geissoschizine + nadph + h(+)