You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
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Under IUPAC nomenclature, a molecule named (5E)-6-methylidene-5-[(E)-(3-pentoxyphenyl)methylidenehydrazinylidene]-1,2,4-triazin-3-one is given. What is its corresponding molecular formula?
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C16H19N5O2
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