One example where our approach to error mitigation does little to correct topological features is HCN. The main reason for this is that the used active space is small and only includes the two bonding 𝜋 and two anti-bonding 𝜋 * orbitals. In contrast to our example of Li2, the 𝜋 orbitals in HCN are polarized due to the difference in electronegativity of N and C. The 𝜋 * orbitals are more pronounced on C and, consequently, have a larger overlap with the identified C basin. In contrast, the 𝜋 orbitals have a larger N contribution and overlap slightly more with the N basin.