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system
Name the molecular formula for the molecule established as 2-(2,6-dioxopiperidin-3-yl)-4-[[1-[(6-ethynylpyridin-3-yl)methyl]azetidin-3-yl]methoxy]isoindole-1,3-dione using the IUPAC nomenclature.
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C25H22N4O5
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