You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Translate the chemical IUPAC name N-hydroxy-2-[4-[(3-oxo-1,2-benzoselenazol-2-yl)methyl]piperidin-1-yl]pyrimidine-5-carboxamide into its molecular formula.
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C18H19N5O3Se
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