You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Name the molecular formula for the molecule established as 2-(4-ethylphenyl)-N-(3-phenylpropyl)imidazo[2,1-b][1,3]benzothiazole-6-carboxamide using the IUPAC nomenclature.
user
C27H25N3OS
assistant