You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Translate the chemical IUPAC name (2S)-N-tert-butyl-2-[[2-(2-ethyl-N-(4-methylphenyl)sulfonylanilino)acetyl]-[(2-fluorophenyl)methyl]amino]propanamide into its molecular formula.
user
C31H38FN3O4S
assistant