You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
1-[(5-ethylsulfanyl-1,3,4-thiadiazol-2-yl)sulfanyl]-3-(4-fluorophenoxy)propan-2-ol is the IUPAC name of a molecule. Please give its molecular formula.
user
C13H15FN2O2S3
assistant