The distinct geometries of the two isomers of pAB make the two systems distinct, just as if the OCC were attached to two different scaffolds. The impact of scaffold on the properties of an OCC, which is of a central importance in the context of laser-cooling, have been extensively studied . Yet, the effect of the scaffold isomerization on the OCC states has not been investigated. Furthermore, what makes pAB special is that cis-and trans-isomers can be inter-converted. Such chemical complexity, which unique to polyatomic molecules, can bring a useful resource to QIS applications.