You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
4-[(2R)-2-hydroxy-3-(4-methylphenoxy)propyl]-5-methyl-[1,2,4]triazolo[1,5-a]pyrimidin-7-one is the IUPAC name of a molecule. Please give its molecular formula.
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C16H18N4O3
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