You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
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2-methyl-N-(5-oxo-2-phenyl-4H-[1,2,4]triazolo[1,5-a]pyrimidin-7-yl)propanamide The above is the IUPAC name of a molecule. Write its molecular formula.
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C15H15N5O2
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