The correct structure of product P in the fol | vedclass

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(D) The reaction involves the treatment of the dipeptide $Asn-Ser$ with excess acetic anhydride $((CH_3CO)_2O)$ in the presence of a base $(NEt_3)$.Ac

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(D) The reaction involves the treatment of the dipeptide $Asn-Ser$ with excess acetic anhydride $((CH_3CO)_2O)$ in the presence of a base $(NEt_3)$.Acetic anhydride is an acetylating agent that reacts with nucleophilic functional groups.In the dipeptide $Asn-Ser$:$1$. The $N$-terminal amino group $(-NH_2)$ of $Asn$ is nucleophilic and will be acetylated to form an amide $(-NHCOCH_3)$.$2$. The side-chain amide group $(-CONH_2)$ of $Asn$ is also nucleophilic and will be acetylated to form an imide $(-CONHCOCH_3)$.$3$. The side-chain hydroxyl group $(-OH)$ of $Ser$ is nucleophilic and will be acetylated to form an ester $(-OCOCH_3)$.Therefore,all three nucleophilic sites are acetylated,resulting in the structure shown in option $D$.

List-$I$ (Amino acid)	List-$II$ (Positive reaction/Test for functional group present in side chain of amino acid)
$A$. Glutamine	$I$. Hinsberg's test
$B$. Lysine	$II$. Neutral $FeCl_3$ test
$C$. Tyrosine	$III$. Ceric ammonium nitrate test
$D$. Serine	$IV$. Hoffman bromamide degradation

The correct structure of product $P$ in the following reaction is
$Asn-Ser + (excess) (CH_3CO)_2O \xrightarrow{NEt_3} P$

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The correct structure of product $P$ in the following reaction is$Asn-Ser + (excess) (CH_3CO)_2O \xrightarrow{NEt_3} P$