Phosphatidylcholine and phosphatidylserine are glycerophospholipids, consisting of a glycerol backbone, two fatty acid chains, and a phosphate group with a head group (e.g., choline or serine).
In the given pentapeptide, find out an essential amino acid (\(Y\)) and the sequence present in the pentapeptide. 
Choose the correct answer from the options given below:
Given below are two statements for the following reaction sequence: 
Match List-I with List-II. 