You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Provide the molecular formula for the IUPAC named substance 3-[(4S)-4-(aminomethyl)-3-(5,7-difluoro-1,2,3,4-tetrahydronaphthalen-2-yl)-2-sulfanylideneimidazolidin-4-yl]propanoic acid .
user
C17H21F2N3O2S
assistant