You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
N-[(5-chloro-1,3-dimethylpyrazol-4-yl)methyl]-2,3,5,6,7,8-hexahydro-1H-pyrrolizin-1-amine The above is the IUPAC name of a molecule. Write its molecular formula.
user
C13H21ClN4
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