You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
2-[4-(2-hydroxyethyl)-5-methyl-3-oxo-1H-pyrazol-2-yl]-6-methyl-1,3-diazinan-4-one The above is the IUPAC name of a molecule. Write its molecular formula.
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C11H18N4O3
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