It helps if you describe your ultimate goal.
The favorites list isn't designed to interact with scripts, as evidenced by how it's stored in CSV format like this. Are you trying to find a specific channel name within the list? finding the 18th item in the list? Finding items that are at a specific network? I can tell from your example that you've chosen something that isn't even selected for autojoin.

The purpose of the favorites list is mainly so you can have a list of channels from which you can choose to join, as well as being a list where some of the channels can be auto-joined every time you connect to that network.
So depending on what you really want, there are several different answers