You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Translate the chemical IUPAC name N-tert-butyl-2-[methyl-[2-[(4-methyl-1,2,4-triazol-3-yl)sulfanyl]acetyl]amino]acetamide into its molecular formula.
user
C12H21N5O2S
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