You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
N-ethyl-4-(1-methylpyrazol-4-yl)-3-oxo-N'-[(4-pyrrolidin-1-yloxan-4-yl)methyl]piperazine-1-carboximidamide;hydroiodide is the IUPAC name of a molecule. Please give its molecular formula.
user
C21H36IN7O2
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