can you get an edl from iMovie?

No. At least not a true EDL in the traditional sense.

You can turn on the Timecode and do one manually say in an Excel Spreadsheet (if you have MS Excel installed). Or you can export to FinalCut XML file (again not a true EDL) and reformat the output to more closely match an EDL.

That's also a big complaint people have when they use iMovie. It doesn't use the source file name in any obvious way. The only thing you might be able to do in the Event Folder is try to hold down the CTRL-key click on the clip and choose Reveal in Finder to decipher the original name of the clip. Like this: