You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
[(3R,4S)-3-amino-4-(2-hydroxyethyl)pyrrolidin-1-yl]-[4-[(3,5-dimethylpyrazol-1-yl)methyl]phenyl]methanone;hydrochloride The above is the IUPAC name of a molecule. Write its molecular formula.
user
C19H27ClN4O2
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