The molecule tab contains one molecule linked to the current active
object in the application workspace. In most cases, a spectrum of a compound
and a respective molecule must be shown together at a glance. The spectrum
is shown in the application workspace and the related molecule is shown
in the molecule tab then.
Otherwise it remains empty.
Molecule as main object!
If the molecule itself is the main item of interest, it will be shown
in the main application workspace and not within the molecule tab.