I have the following string:

Prefix/Product-[1stMod-]SubProduct-2ndMod-Patch

I am trying to extract from the above:

[1stMod-]SubProduct

where ‘1stMod-‘ may or may not exist

and

2ndMod-Patch

where ‘2ndMod-‘ does actually exist.

As such, ‘[1stMod-]SubProduct’ is between the first dash and the second to last dash and ‘2ndMod-Patch’ is after the second to last dash through the end.