You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
5-[2-[4-(4-fluorophenyl)piperazin-1-yl]-2-oxoethyl]sulfanyl-N-(4-methylphenyl)-1,3,4-thiadiazole-2-carboxamide is the IUPAC name of a molecule. Please give its molecular formula.
user
C22H22FN5O2S2
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