You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Translate the chemical IUPAC name N-(2-phenylsulfanylphenyl)-2-[(5-pyridin-4-yl-1,3,4-oxadiazol-2-yl)sulfanyl]propanamide into its molecular formula.
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C22H18N4O2S2
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