You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Under IUPAC nomenclature, a molecule named (5Z)-3-[(5-chloro-2-methylanilino)methyl]-5-[(4-methoxyphenyl)methylidene]-2-sulfanylidene-1,3-thiazolidin-4-one is given. What is its corresponding molecular formula?
user
C19H17ClN2O2S2
assistant