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 tert-butyl 4-[5-(6-chloro-4-fluoropyridin-3-yl)-1,3,4-thiadiazol-2-yl]piperazine-1-carboxylate .
user
C16H19ClFN5O2S
assistant