You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Please write the molecular formula of the molecule N-[3-acetyl-2-[3-chloro-4-[(2-fluorophenyl)methoxy]phenyl]-2H-1,3,4-thiadiazol-5-yl]acetamide .
user
C19H17ClFN3O3S
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