You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Please write the molecular formula of the molecule ethyl 4-[N-[(3,5-dimethyl-1-phenylpyrazol-4-yl)methyl]-N'-methylcarbamimidoyl]piperazine-1-carboxylate;hydroiodide .
user
C21H31IN6O2
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