You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
For the molecule named (2S)-2-(2-ethylphenoxy)-N-(5-methylsulfanyl-1,3,4-thiadiazol-2-yl)propanamide by IUPAC nomenclature, provide its molecular formula.
user
C14H17N3O2S2
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