You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
For the molecule named (5E)-5-[[4-[(3,4-dichlorophenyl)methoxy]-3-ethoxyphenyl]methylidene]-3-phenyl-1,3-thiazolidine-2,4-dione by IUPAC nomenclature, provide its molecular formula.
user
C25H19Cl2NO4S
assistant