You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
3-(1,3-dioxoisoindol-2-yl)-N-[2-[(5Z)-5-[(4-methylphenyl)methylidene]-2,4-dioxo-1,3-thiazolidin-3-yl]ethyl]benzamide The above is the IUPAC name of a molecule. Write its molecular formula.
user
C28H21N3O5S
assistant