While looking very different, these two examples demonstrate that the 𝒮 𝑚 ℬ 𝑛 partitioning approach can be broadly applied whether it be a significantly larger molecule (as in the subporphyrin) or relatively small (H2[MO3]), or pertain to atom-connectivity permutations inside a molecule (the subporphyrin) or on the outside (H2[MO3]). The files "genera_D3h_S3B2.txt" and "species_D3h_S3B2.txt" in the Supplementary Information provide the raw data to generate the generic and specific structures, respectively, shown in Fig. .