Finally, for the two most insensitive molecules of the test set, DNAN (220 cm) and DATB (320 cm), there is an extreme case -DATB -in which all properties contribute to increasing ℎ .# , whereas for DNAM the polarization of the nitro group contributes to slightly reducing ℎ .# and the other three properties significantly contribute to increasing it. In particular, we see the role of the electron delocalization (∑ 𝑄 ' (𝐶)): this property only contributes to increasing the value of ℎ .# for these two highly insensitive molecules.