You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
What is the molecular formula of the molecule (2S)-2-N-(5-ethyl-1,3,4-thiadiazol-2-yl)-1-N-(2-fluorophenyl)pyrrolidine-1,2-dicarboxamide ?
user
C16H18FN5O2S
assistant