You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Translate the chemical IUPAC name (5S)-5-(4-aminobutyl)-1-[2-[3,5-bis(trifluoromethyl)phenyl]ethyl]imidazolidine-2-thione into its molecular formula.
user
C17H21F6N3S
assistant