The number of structures and the run times are listed for MOLGEN 5.0, MAYGEN and OMG (molecules do not contain N, P or S). A more diverse set of molecular formulae is benchmarked in Table . Molgen 5.0 has an aromaticity filter that filters out resonance structures of substituted aromatic molecules. This filter is activated by default and therefore Molgen 5.0 generates fewer structures than Molgen 3.5 and MAYGEN. For most structures containing all allowed elements, MOLGEN was slightly faster than MAYGEN and much faster than OMG (Figure -12); for carbohydrates and those containing additional oxygen, MAYGEN's execution speed was comparable to that of MOLGEN. OMG was not able to generate some of the tested molecular formulae within a day. For these formulae, "24>h" is added to the tables. Since the bromine (Br) atom type is not defined in OMG; "N/A'' is added to the result tables. These results are visualized with spaces in the plots (Figure -12).