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system
Name the molecular formula for the molecule established as 3-[4-[(2,3,3a,4,6,7-hexahydro-1H-pyrano[3,4-c]pyrrol-7a-ylamino)methyl]-3-oxo-1H-isoindol-2-yl]piperidine-2,6-dione using the IUPAC nomenclature.
user
C21H26N4O4
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