You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
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Convert the IUPAC name of a molecule [2-(2-hydroxy-2-phenylethyl)pyrrolidin-1-yl]-(5-methyl-1-piperidin-4-yltriazol-4-yl)methanone;hydrochloride into molecular formula.
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C21H30ClN5O2
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