(19E)-geissoschizine + reduced [NADPH--hemoprotein reductase] + O2 = akuammicine + formate + oxidized [NADPH--hemoprotein reductase] + H2O + H(+)
(19e)-geissoschizine + reduced [nadph--hemoprotein reductase] + o2 = akuammicine + formate + oxidized [nadph--hemoprotein reductase] + h2o + h(+)