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-[(1R)-2-oxo-1-(1-propanoylpiperidin-4-yl)-2-(prop-2-enylamino)ethyl]-1,3-benzodioxole-5-carboxamide into molecular formula.
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C21H27N3O5
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