You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Can you give the molecular formula of the molecule 1-[5-[(2S)-2-[3-(cyclopropylmethoxy)-5-fluorophenyl]propyl]sulfonylpentyl]imidazolidine-2,4-dione;sulfane ?
user
C21H31FN2O5S2
assistant