The .7z extension indicates a compressed archive, often used for distributing large documents, datasets, or collections of papers.
The file you are looking for, , was likely hosted on Lolabits , a cloud storage and file-sharing service that shut down in 2016. 797 798 800.7z - Lolabits
Lolabits (lolabits.es) officially ceased operations in early 2016, and most links to its files are now broken. often used for distributing large documents