The file name
For player builds this the filename relative to the Data folder of the build, for example "globalgamemanagers.assets.resS".
For an AssetBundle this is the filename inside the Unity Archive file, for example "CAB-cc6c60ef8808e0fc6663136604321554" and "CAB-cc6c60ef8808e0fc6663136604321554.resS".
Additional resources: BuildFile