You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
(5Z)-3-benzyl-5-[(3-chloro-4-ethoxyphenyl)methylidene]-2-phenylimino-1,3-thiazolidin-4-one The above is the IUPAC name of a molecule. Write its molecular formula.
user
C25H21ClN2O2S
assistant