You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
ethyl 3-[[5-(ethylamino)-1,3,4-thiadiazol-2-yl]sulfanylmethyl]-4-fluoro-1-benzothiophene-2-carboxylate The above is the IUPAC name of a molecule. Write its molecular formula.
user
C16H16FN3O2S3
assistant