newAtomContainer = (IAtomContainer) chemModel.getMoleculeSet()
.getAtomContainer(0);
else
chemModel.getMoleculeSet().addAtomContainer(newAtomContainer);
newAtomContainer.add(ring);
updateAtoms(ring, ring.atoms());
structureChanged();
if (undoable && getUndoRedoFactory() != null
&& getUndoRedoHandler() != null) {
IUndoRedoable undoredo = getUndoRedoFactory()
.getAddAtomsAndBondsEdit(getIChemModel(),