You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Translate the chemical IUPAC name N-[2-[(5Z)-5-benzylidene-2,4-dioxo-1,3-thiazolidin-3-yl]ethyl]-2-(2-nitrophenyl)acetamide into its molecular formula.
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C20H17N3O5S
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