If you are not seeing a chemical formula in the "Molecule Formula" column then that would seem to indicate that Skyline does not know the chemical formula of the molecules.
That is, it looks like when these molecules were first added to Skyline they were specified using m/z values instead of using chemical formulas.
If you send us your Skyline document we could see whether there is anything in there that might tell you what the chemical formulas are, but it's likely the information really is not there.
In Skyline you can use the menu item:
File > Share
to create a .zip file containing your Skyline document and supporting files including extracted chromatograms.
If that .zip file is less than 50MB you can attach it to this support request. You can always upload larger files here:
https://skyline.ms/files.url
-- Nick