You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Convert the IUPAC name of a molecule N-[2-(azetidin-1-yl)-1,3-benzoxazol-5-yl]-2,3-dihydro-1-benzofuran-5-carboxamide into molecular formula.
user
C19H17N3O3
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