You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
5-chloro-N-[2-(3-cyclopropyl-[1,2,4]triazolo[3,4-b][1,3,4]thiadiazol-6-yl)ethyl]thiophene-2-sulfonamide The above is the IUPAC name of a molecule. Write its molecular formula.
user
C12H12ClN5O2S3
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