You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
For the molecule named 3-(5-methylfuran-2-yl)-N-(2-oxo-1,3-dihydrobenzimidazol-5-yl)prop-2-enamide by IUPAC nomenclature, provide its molecular formula.
user
C15H13N3O3
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