Analyzing T (c p , c g ) between the respective parent and generated molecules reveals that fine prompts generally result in higher T (c p , c g ) than coarse prompts (see Figure ). This observation aligns with the expectation that coarse prompts induce more significant alterations in molecular structures (i.e., via the phrase "completely different molecules" instead of "similar molecules"). However, the extent of these changes varies depending on the specific modification mechanism described within each sub-prompt, emphasizing the importance of prompt engineering in steering the LLM behavior. Among the fine prompts, all variants exhibit similar T (c p , c g ) values, with prompt B showing a slightly higher median T (c p , c g ) at 0.69, compared to A, C, and D, which have median T (c p , c g ) values of 0.67, 0.68, and 0.67, respectively. Coarse prompts F-H exhibit comparable T (c p , c g ) distributions, with prompts F and G having the lowest median T (c p , c g ) at 0.09 across all prompts, and prompt H having a slightly higher median T (c p , c g ) at 0.10. However, prompt E is significantly higher at a median T (c p , c g ) of 0.37, behaving more like the fine prompts, probably due to the more specific language "atoms or bonds" which implies local changes only, as opposed to more global language in the other sub-prompts.