You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
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2-[2-chloro-6-(hydroxymethyl)phenyl]-1-[(1S)-1-methyl-3,4-dihydro-1H-isoquinolin-2-yl]ethanol is the IUPAC name of a molecule. Please give its molecular formula.
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C19H22ClNO2
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