You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
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For the molecule named 4-amino-1-[(2S,4S,5R)-2-benzoyl-4-hydroxy-5-(hydroxymethyl)oxolan-2-yl]-5-prop-2-enylpyrimidin-2-one by IUPAC nomenclature, provide its molecular formula.
user
C19H21N3O5
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