Have a look at your desktop file than...

/usr/share/applications/hildon

There should be a file (don't know the name but it should be there) that contains nfsuc inn the filename.

In that file the executable is mentioned, as well as it's location.

If you can't figure it out, just find the exact filename and use cat to display the file's' content so you can paste it.

cat /usr/share/applications/hildon/desktopfile.desktop