) to suggest at a potential competition between A, G, and SA to remain in the cluster. This contradicts the CID experiment, where we observed no fragment corresponding to the loss of G or SA. Additionally, the energy required to remove (A)(SA) from this cluster is substantially higher (>10 kcal mol -1 ) than the energy required to remove G or SA. Yet, our CID results show that the loss of (A)(SA) is a major fragmentation pathway for this cluster. A plausible explanation for these differences could be that the experimentally and computationally probed clusters feature different structures, prompting us to study the structures of the five selected clusters through gas-phase vibrational spectroscopy.