You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
N-(3-chloro-4-fluorophenyl)-2-[(5R)-2-(3,5-dimethylphenyl)imino-4-oxo-1,3-thiazolidin-5-yl]acetamide is the IUPAC name of a molecule. Please give its molecular formula.
user
C19H17ClFN3O2S
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