Densities of backbones are highest below and underneath the aromatic rings, whereas edges of the CUR molecules were more often observed to be flanked by polymer sidechains. Polymer amides near aromatic drug moieties could promote further interactions, as was recently observed for the case of poly(2-phenyl-2-oxazine)-based structures in addition to aromatic amino acids. In contrast to hotspots around the aromatic rings, densities around the keto-enol tautomer are much more diffuse for all polymer moieties, suggesting, once more, only weak interactions with this functional group.