Light curves of g, V, and r for a CSM model W17 with a compact CSM (1.5 × 10¹⁴ cm, 1.56 M_⊙), and shell models: ‘Shell1’, ‘Shell2’, and ‘Shell3’ with an inner radius of 700 R_⊙, outer radii of 1000 R_⊙, 900 R_⊙, and 800 R_⊙, masses of 0.9 M_⊙, 1 M_⊙, and 0.5 M_⊙, and injected energies of 0.01 foe, 0.02 foe, and 0.0185 foe, respectively. The observational data are taken from Li et al. (2024) and are shown by circles. The triangles indicate non-detection and are also from Li et al. (2024).