You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
N-(2-fluorophenyl)-2-[5-methyl-2-[[4-(4-methylphenyl)-1,3-thiazol-2-yl]methylidene]-4-oxo-1,3-thiazolidin-3-yl]acetamide is the IUPAC name of a molecule. Please give its molecular formula.
user
C23H20FN3O2S2
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