1-[4-(di(propan-2-yl)amino)but-2-ynyl]-3,3-di(phenyl)pyrrolidine-2,5-dione
1-[4-(diisopropylamino)but-2-ynyl]-3,3-di(phenyl)pyrrolidine-2,5-dione
1-[4-(diisopropylamino)but-2-ynyl]-3,3-di(phenyl)pyrrolidine-2,5-quinone