In Figure , we show how the current density of 3 changes when calculated in three different ways: at EF with all MOs included (x = 0.0); at EHOMO with all MOs (x = 0.0); and at EHOMO with only the two highest occupied MOs (x = 0.9). The biggest qualitative change happens when moving from EF to EHOMO as the circular current density starts alternating between moving clockwise and counterclockwise around every other carbon atom. This change is visualized by the interchanging red and blue arrows. It was also reported by Garner et al. When we reduce the description of the current density calculated at EHOMO to only include the two highest occupied MOs, we see that the vector field thins out. We show in Figure S12 that the integrated current along the z-direction is lower when we only use ψHOMO and ψHOMO-1 to calculate the current density. Combined with the fact that we disregard arrows smaller than 5% of the largest arrow, fewer arrows are plotted. While the filtered current density deviates quantitatively from the full current density, the qualitative structure is preserved as seen from Figure .