You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
(2R)-N-[(2R)-butan-2-yl]-2-[[2-(3-chloro-4-fluoro-N-methylsulfonylanilino)acetyl]-[(4-methoxyphenyl)methyl]amino]propanamide is the IUPAC name of a molecule. Please give its molecular formula.
user
C24H31ClFN3O5S
assistant