You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
(4E)-4-[(3-chloro-4-methoxyphenyl)-hydroxymethylidene]-1-(6-ethoxy-1,3-benzothiazol-2-yl)-5-pyridin-3-ylpyrrolidine-2,3-dione is the IUPAC name of a molecule. Please give its molecular formula.
user
C26H20ClN3O5S
assistant