You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Translate the chemical IUPAC name [(2S)-1-anilino-1-oxopropan-2-yl] 3-[(3aS,7aS)-1,3-dioxo-3a,4,5,6,7,7a-hexahydroisoindol-2-yl]propanoate into its molecular formula.
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C20H24N2O5
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