Which of the following is the correct structure of Adenosine?

The correct sequence of amino acids present in the tripeptide given below is:

The correct structure of product $\text{'}\mathrm{P}\text{'}$ in the following reaction is:

$\mathrm{Asn}+\mathrm{Ser}+{\underset{\left(\mathrm{Excess}\right)}{\left({\mathrm{CH}}_3\mathrm{CO}\right)}}_2\mathrm{O}\stackrel{{\mathrm{NEt}}_3}{⟶}\mathrm{P}$

${\mathrm{C}}_6{\mathrm{H}}_{12}{\mathrm{O}}_6\underset{373\mathrm{K}}{\overset{\mathrm{HI}/\mathrm{Red} \mathrm{P}}{\to }}\mathrm{A}+\mathrm{B}$

The products $\mathrm{A}$ and $\mathrm{B}$ respectively are