You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
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For the molecule named (2S)-2-amino-1-[3-(methylsulfanylmethyl)pyrrolidin-1-yl]-3-phenylpropan-1-one;hydrochloride by IUPAC nomenclature, provide its molecular formula.
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C15H23ClN2OS
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