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What is the molecular formula of the compound with this IUPAC name (3aR,7aS)-2-[2-[(2S)-2-[(3S,4S)-4-hydroxy-4-methyloxan-3-yl]pyrrolidin-1-yl]-2-oxoethyl]-3a,4,7,7a-tetrahydroisoindole-1,3-dione ?
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C20H28N2O5
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