You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
What is the molecular formula of the compound with this IUPAC name 2-[(3,4-dichlorophenyl)methyl-[3-(1,1,3-trioxo-1,2-benzothiazol-2-yl)propanoyl]amino]-N-ethylbutanamide ?
user
C23H25Cl2N3O5S
assistant