You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
For the molecule named (5Z)-5-[(5-chloro-2-ethoxyphenyl)methylidene]-2-sulfanylidene-1,3-thiazolidin-4-one by IUPAC nomenclature, provide its molecular formula.
user
C12H10ClNO2S2
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