The file does not appear to be a widely known dataset or public research artifact. The name is a 7-Zip compressed archive file, as indicated by the .7z extension.
: The official free, open-source tool for this format, available at 7-zip.org. y9G2Xd09y3.7z
: The name may be a unique identifier for a private backup or secure transfer. The file does not appear to be a
: A free alternative that supports the LZMA and LZMA2 compression used in 7z files. open-source tool for this format