You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Translate the chemical IUPAC name (3R,4S)-4-(1-methylpyrazol-4-yl)-N-(1-propylindol-6-yl)pyrrolidine-3-carboxamide;hydrochloride into its molecular formula.
user
C20H26ClN5O
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