How to know which files must be restored fro mbackup?

All files stored in the vault just as random file names (d\2E\PRSI6Q3ZASLMAHGQNFVVSDO66NYXXO). If I have deleted one file in the opened vault how to know which of the fault files I have to restore?

Is there a mapping table
real file name - fault file name?

Or what is the way to restore deleted files?

No.

Restore them from your backup.
Or if you are using Cryptomator with an online storage provider which offers a recycle bin, then you can restore the latest deleted files there also.

Or you are trying this (don’t know your operating system)