Run: 7z l Enz1.7z to list all files contained within the archive. Potential Issues
If you get an error saying "Cannot open file as archive," the file's header might be corrupted. You can sometimes fix this by using the [Test] command in 7-Zip or opening the file in a hex editor to check the start and end headers.
If a password prompt appears, the contents are encrypted. You will need the specific password to "look into" or extract any of the text files.