Answer:
Following are the solution to this question:
Step-by-step explanation:
The octapeptides are:
![gly-ala-gly-ala-gly-ala-gly-ala](https://img.qammunity.org/2021/formulas/chemistry/college/4uo0v8emb53toife3qedlaycaq1j1wehe0.png)
Its structure includes free glycine amino, and alanine residues free carboxylic. Its peptides are customarily extracted from the left side free NH2 residues as well as the right side free -COOH residues only in the same direction, the sequence is provided.
please find the structure in the attached file.