Crystal structure and Hirshfeld surface analysis of ethyl (3E)-5-(4-chloro­phen­yl)-3-{[(4-chloro­phen­yl)formamido]­imino}-7-methyl-2H,3H,5H-[1,3]thia­zolo[3,2-a]pyrimidine-6-carboxyl­ate

In the title mol­ecule, C(23)H(20)Cl(2)N(4)O(3)S, the thia­zole ring is planar while the pyrimidine unit fused to it adopts a screw-boat conformation. In the crystal, thick sheets parallel to the bc plane are formed by N—H⋯N, C—H⋯N and C—H⋯O hydrogen bonds together with π–π inter­actions between the formamido carbonyl groups and the thia­zole rings. Hirshfeld surface analysis indicates that the most important contributions to the crystal packing are from H⋯H (30.9%), Cl⋯H/H⋯Cl (20.7%), C⋯H/H⋯C (16.8%) and O⋯H/H⋯O (11.4%) inter­actions.