Crystal structure of ethyl (2<i>S</i>,2′<i>R</i>)-1′-benzyl-3-oxo-3<i>H</i>-dispiro[1-benzothiophene-2,3′-pyrrolidine-2′,11′′-indeno[1,2-<i>b</i>]quinoxaline]-4′-carboxylate
Acta crystallographica. Section E, Crystallographic communications