You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
3,3-dimethyl-N-[2-[(5E)-5-[(4-methylphenyl)methylidene]-2,4-dioxo-1,3-thiazolidin-3-yl]ethyl]butanamide is the IUPAC name of a molecule. Please give its molecular formula.
user
C19H24N2O3S
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