The filename is likely a segmented archive from a The Sims 4 game repack provided by the well-known repacker DODI .

: A massive hub for Sims 4 Mods and CC like hair, clothing, and furniture.

: Always ensure you are downloading from the official DODI Repacks site . Many "sketchy" mirror sites use similar names to hide malware or viruses. It is highly recommended to run a virus scan on the extracted files before installation. The Sims 4 Modding

Once the game is installed, many users look for "cool" content through mods. You can enhance your Sims experience with these reputable sources:

: Primarily used for high-quality Custom Content (CC) backgrounds and aesthetic overrides. Are you having trouble extracting the files, or How to safely use mods in The Sims 4? - Facebook

In the world of game repacks, large games are often split into smaller parts (like .part1 through .part10) to make downloading easier and more manageable. The name "DODISIMSHISCOOL" appears to be a specific naming convention used by this creator for their Sims 4 releases. Managing Multipart RAR Files

If you are working with this specific file, here is how to handle it properly: