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 (2S)-N-[(2S)-6-(1-aminoethylideneamino)-1-(methylamino)-1-oxohexan-2-yl]-N'-hydroxy-3-methyl-2-(2-methylpropyl)butanediamide is given. What is its corresponding molecular formula?
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C18H35N5O4
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