4,4'-(((Ethane-1,2-diylbis(oxy))bis(ethane-2,1-diyl))bis(azanediyl))bis(2-(2,6-dioxopiperidin-3-yl)isoindoline-1,3-dione)

4,4'-(((Ethane-1,2-diylbis(oxy))bis(ethane-2,1-diyl))bis(azanediyl))bis(2-(2,6-dioxopiperidin-3-yl)isoindoline-1,3-dione),