You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Translate the chemical IUPAC name 2-amino-N-[1-[2-(benzylamino)-2-oxoethyl]-1,2,4-triazol-3-yl]-2-methylpropanamide;hydrochloride into its molecular formula.
user
C15H21ClN6O2
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