The starting raw material for the synthesis of lignocaine (also known as lidocaine) is 2,6-Xylidine. This compound undergoes a series of reactions to form the final anesthetic compound.
A dipeptide, “x”, on complete hydrolysis gives “y” and “z”; “y” on treatment with aqueous HNO$_2$, produces lactic acid. On the other hand, “z” on heating gives the following cyclic molecule. 
Based on the information given, the dipeptide X is:
Match the following:
(P) Schedule H
(Q) Schedule G
(R) Schedule P
(S) Schedule F2
Descriptions:
(I) Life period of drugs
(II) Drugs used under RMP
(III) List of Prescription Drugs
(IV) Standards for surgical dressing
Choose the correct match of laxative and its Mechanism of Action (MOA):
