label: 3,17-didehydrostemmadenine + oxidized [NADPH--hemoprotein reductase] + 2 H2O => (19E)-geissoschizine + reduced [NADPH--hemoprotein reductase] + O2
label_lc: 3,17-didehydrostemmadenine + oxidized [nadph--hemoprotein reductase] + 2 h2o => (19e)-geissoschizine + reduced [nadph--hemoprotein reductase] + o2