You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
2-[1-(4-fluorophenyl)pyrazolo[3,4-d]pyrimidin-4-yl]sulfanyl-N-[2-(4-methylphenyl)sulfanylethyl]acetamide is the IUPAC name of a molecule. Please give its molecular formula.
user
C22H20FN5OS2
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