The archive was created using 7-Zip compression, which is known for high compression ratios.

Ensure you have all the numbered segments (at least SS-Lisa-v-045.7z.001 , .002 , and .003 ) in the same folder.

To access the contents, you cannot open this file by itself. You must:

Use a program like 7-Zip or WinRAR to open only the .001 file.