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(B) $1$. Cyclopentanol reacts with $PBr_3$ to form bromocyclopentane $(W)$.$2$. Bromocyclopentane reacts with $Mg$ in ether to form the Grignard reage

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(B) $1$. Cyclopentanol reacts with $PBr_3$ to form bromocyclopentane $(W)$.$2$. Bromocyclopentane reacts with $Mg$ in ether to form the Grignard reagent,cyclopentylmagnesium bromide $(X)$.$3$. Cyclopentanol is oxidized by $Na_2Cr_2O_7$ to form cyclopentanone $(V)$.$4$. The Grignard reagent $(X)$ reacts with cyclopentanone $(V)$ followed by acidic workup $(H_3O^+)$ to form dicyclopentylmethanol $(Y)$.$5$. Dicyclopentylmethanol $(Y)$ reacts with acetyl chloride $(CH_3COCl)$ to form the ester product $Z$.

Column-$I$: Compound / Reagent	Column-$II$: Other name / Chemical / Process
$A$. Methanol	$I$. Lucas reagent
$B$. $ZnCl_2$ / Conc. $HCl$	$II$. Baeyer's reagent
$C$. Rectified spirit	$III$. Wood spirit
$D$. Dil. $KMnO_4$	$IV$. $95 \% C_2H_5OH$
-	$V$. $75 \% C_2H_5OH$
-	$VI$. $90 \% C_3H_7OH$

The product $Z$ of the above reaction is:

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