You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Please write the molecular formula of the molecule ethyl 4-[3-[(5Z)-5-[(5-chloro-2-hydroxyphenyl)methylidene]-4-oxo-2-sulfanylidene-1,3-thiazolidin-3-yl]propanoylamino]benzoate .
user
C22H19ClN2O5S2
assistant