You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Convert the IUPAC name of a molecule N'-methyl-N-[[3-(1,2,4-triazol-1-ylmethyl)phenyl]methyl]-2,3-dihydroindole-1-carboximidamide;hydroiodide into molecular formula.
user
C20H23IN6
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