You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
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Under IUPAC nomenclature, a molecule named N-(2,3,4,5-tetrahydro-1,4-benzoxazepin-7-yl)bicyclo[4.2.0]octa-1,3,5-triene-7-carboxamide;hydrochloride is given. What is its corresponding molecular formula?
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C18H19ClN2O2
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