Cloud mass functions (top panel) and young cluster (< 5 Myr) initial mass functions (CIMFs, bottom panel) of the merger system at different stages. The dashed gray line denotes the power-law relation with a slope of −1.5, −2, and −2.5, respectively. A starburst induced by the merger leads to the formation of massive clusters, especially during the second SFR peak. The maximum cloud masses are (1.8,  23,  11,  90)×10³ M_⊙ for the Approach, 1^st peak, Plateau, and 2^nd peak stages, respectively. The maximum cluster masses are (0.93,  3.4,  1.8,  26)×10³ M_⊙ for these four stages.