You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
(2S)-2-[(2-chlorophenyl)methyl-[4-(3-methyl-N-methylsulfonylanilino)butanoyl]amino]-N-propylbutanamide is the IUPAC name of a molecule. Please give its molecular formula.
user
C26H36ClN3O4S
assistant