4-hydroxybenzaldehyde + acetate => (E)-4-coumarate + H2O
4-hydroxybenzaldehyde + acetate => (e)-4-coumarate + h2o
4-hydroxybenzaldehyde + acetate => (E)-4-coumarate + H2O
4-hydroxybenzaldehyde + acetate => (e)-4-coumarate + h2o