You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Translate the chemical IUPAC name N-butyl-2-[[2-[N-(dimethylsulfamoyl)-4-fluoroanilino]acetyl]-[(2-methylphenyl)methyl]amino]-3-phenylpropanamide into its molecular formula.
user
C31H39FN4O4S
assistant