where the lowest-energy isomer (isomer 03) is used as reference. We compare the relative energies calculated with the different MBEs to those obtained from supermolecular calculations in Fig. . In this figure, the horizontal dashed lines indicate the supermolecular Included are results from both the isolated MBEs ("iso") and the embedded MBEs using pointcharge embedding ("PC") as well as using frozen-density embedding with the unrelaxed frozen densities of the isolated fragments ("FDE") and a relaxed frozen density obtained using freeze-and-thaw cycles ("FDE-ft"). Some data points might lie outside the shown energy range.