$\mathrm{CH}_{3} \mathrm{COOH} \stackrel{\mathrm{LiAlH}_{4}}{\longrightarrow} \mathrm{X} \underset{300^{\circ} \mathrm{C}}{\stackrel{\mathrm{Cu}}{\longrightarrow}} \mathrm{Y} \underset{\mathrm{NaOH}}{\stackrel{\text { Dilute }}{\longrightarrow}} \mathrm{Z}$
In the above reaction $Z$ is