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-[3-[(4S)-6,8-dichloro-2-methyl-3,4-dihydro-1H-isoquinolin-4-yl]phenyl]-5-methyl-1,3,4-oxadiazole;hydrochloride into molecular formula.
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C19H18Cl3N3O
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