Fig. 2

Exemplary prompt-driven molecule optimizations: a the highest occupied molecular orbital (HOMO) energy optimization, b the lowest unoccupied molecular orbital (LUMO) energy optimization, c the HOMO-LUMO energy gap optimization, d the water solubility optimization, (e) the polarity optimization, f the water solubility and polarity multi-objective optimization. Prompts shown in the figure are simplified and exact prompts used in experiments can be found in Table 2