4-((3,6,9,12-Tetraoxapentadec-14-yn-1-yl)amino)-2-(2,6-dioxopiperidin-3-yl)isoindoline-1,3-dione 1g

4-((3,6,9,12-Tetraoxapentadec-14-yn-1-yl)amino)-2-(2,6-dioxopiperidin-3-yl)isoindoline-1,3-dione 1g