You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Translate the chemical IUPAC name (2R)-2-[(2-chlorophenyl)methyl-[2-(N-(3,4-dimethoxyphenyl)sulfonyl-2,5-dimethoxyanilino)acetyl]amino]-N-ethylbutanamide into its molecular formula.
user
C31H38ClN3O8S
assistant