Here are a few aromatic scaffolds that can be synthesized that put us in the ballpark of the bandgap we are after, we can add one or more electron withdrawing groups to tune the frontier orbitals, let's avoid ester substitutions because we probably want it to be stable in acid. To emulate such reasoning in a design task, the model would need access to a broad base of chemical knowledge that has very little obvious association with the task at hand. This suggests fundamentally different model architectures and training curricula for deductively capable models.