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 N-(8-azabicyclo[3.2.1]octan-3-yl)-2-[(2-fluorophenyl)sulfonylamino]-3-methylbutanamide;hydrochloride into molecular formula.
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C18H27ClFN3O3S
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