Select the Correct Sum Formula

After double clicking on a calculated monomer or endgroup in the project explorer, all possible sum formulas for it will be shown on the right panel in descending "probability" order. Right click on the correct one and choose Select:

The sum formula of the endgroup contains the both endgroups on both sides of the polymer. After selecting the correct sum formula, it is displayed in the project explorer. If sum formulas are assigned to all monomers and endgroups, the project explorer looks like this:

This means, the monomer is C5O2H8 and the for endgroups are C3H6, C4O2H6, C4H8 and CH2.

The selected sum formulas will be shown in the graphic.