Which is known as the oil of winter green?

Predict the compound $\left[\mathrm{C}\right]$, in the following series of reactions.

${\mathrm{CH}}_3\mathrm{COOH}\stackrel{{\mathrm{PCl}}_5}{⟶}\left[\mathrm{A}\right]\underset{\mathrm{anhy}. {\mathrm{ACl}}_3}{\overset{{\mathrm{C}}_6{\mathrm{H}}_6}{\to }}\left[\mathrm{B}\right]\stackrel{{\mathrm{CH}}_3\mathrm{MgBr}}{⟶}\left[\mathrm{C}\right]$

The end product $\mathrm{B}$ in the sequence of reactions,

$\mathrm{R}-\mathrm{X}\stackrel{{\mathrm{CN}}^{-}}{⟶}\mathrm{A}\stackrel{\mathrm{NaOH}}{⟶}$ is