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(A) The reaction involves the oxidative cleavage of alkenes using hot acidic $KMnO_4$. $1$. The cyclic alkene part (cyclopentene ring) undergoes cleav

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$3-$butenylcyclopentene

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(A) The reaction involves the oxidative cleavage of alkenes using hot acidic $KMnO_4$. $1$. The cyclic alkene part (cyclopentene ring) undergoes cleavage to form a dicarboxylic acid. Specifically,the double bond in the cyclopentene ring is cleaved to yield a chain with two carboxylic acid groups at the ends. $2$. The terminal alkene (vinyl group) undergoes oxidation to form $CO_2$ and a carboxylic acid group at the terminal position. $3$. Based on the product structure,the starting material is $3-	ext{butenylcyclopentene}$. The cleavage of the cyclopentene ring results in the $HOOC-CH_2-CH_2-CH(CH_2-CH_2-COOH)-CH_2-CH_2-COOH$ structure (or similar depending on the specific isomer) and the terminal alkene gives $CO_2$.

Which of the following compounds was the starting material for the oxidation shown below?
$Compound \xrightarrow{KMnO_4 / H^{\oplus}} \text{Product}$

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Which of the following compounds was the starting material for the oxidation shown below?$Compound \xrightarrow{KMnO_4 / H^{\oplus}} \text{Product}$