You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
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Convert the IUPAC name of a molecule methyl (E)-3-[3-nitro-4-[3-(1,2,4-triazol-1-yl)butan-2-ylamino]phenyl]prop-2-enoate into molecular formula.
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C16H19N5O4
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