You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
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For the molecule named 2-[2-[(2-amino-4-carboxybutanoyl)amino]-3-(1,3-dicarboxypropylamino)-3-oxopropyl]propanedioic acid by IUPAC nomenclature, provide its molecular formula.
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C16H23N3O12
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