(E)-4-coumaraldehyde + NADP(+) + CoA = (E)-4-coumaroyl-CoA + NADPH + H(+)
(e)-4-coumaraldehyde + nadp(+) + coa = (e)-4-coumaroyl-coa + nadph + h(+)
(E)-4-coumaraldehyde + NADP(+) + CoA = (E)-4-coumaroyl-CoA + NADPH + H(+)
(e)-4-coumaraldehyde + nadp(+) + coa = (e)-4-coumaroyl-coa + nadph + h(+)