You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
(E)-3-(6-chloroimidazo[2,1-b][1,3]thiazol-5-yl)-N-(3-fluoro-4-morpholin-4-ylphenyl)prop-2-enamide is the IUPAC name of a molecule. Please give its molecular formula.
user
C18H16ClFN4O2S
assistant