You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
2-[[4-ethyl-5-(4-fluorophenyl)-1,2,4-triazol-3-yl]sulfanyl]-N-(1,3-thiazol-2-yl)acetamide is the IUPAC name of a molecule. Please give its molecular formula.
user
C15H14FN5OS2
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