(E)-caffeyl aldehyde + oxidized [NADPH--hemoprotein reductase] + H2O + H(+) => (E)-4-coumaraldehyde + reduced [NADPH--hemoprotein reductase] + O2
(e)-caffeyl aldehyde + oxidized [nadph--hemoprotein reductase] + h2o + h(+) => (e)-4-coumaraldehyde + reduced [nadph--hemoprotein reductase] + o2
(E)-caffeyl aldehyde + oxidized [NADPH--hemoprotein reductase] + H2O + H(+) => (E)-4-coumaraldehyde + reduced [NADPH--hemoprotein reductase] + O2
(e)-caffeyl aldehyde + oxidized [nadph--hemoprotein reductase] + h2o + h(+) => (e)-4-coumaraldehyde + reduced [nadph--hemoprotein reductase] + o2