You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Convert the IUPAC name of a molecule N-ethyl-2-[2-phenylethyl-[3-(1,1,3-trioxo-1,2-benzothiazol-2-yl)propanoyl]amino]butanamide into molecular formula.
user
C24H29N3O5S
assistant