(-)-(R)-19-hydroxytabersonine + oxidized [NADPH--hemoprotein reductase] + H2O + H(+) => (-)-tabersonine + reduced [NADPH--hemoprotein reductase] + O2
(-)-(r)-19-hydroxytabersonine + oxidized [nadph--hemoprotein reductase] + h2o + h(+) => (-)-tabersonine + reduced [nadph--hemoprotein reductase] + o2