Spiro[2H-indole-3,7'-(1'-methyl-6'-cyano-1',8',2',3'-tetrahydro-7'H-1'-pyrindine)]

S,S-Dimethyl-N-(2-oxo-1-indolinyl)sulfoximide

“…1. All bond lengths and angles in the fivemembered ring have values consistent with those of other structures (Chiaroni, Doucerain & Riche, 1976: Karle, Britts & Gum, 1964 Brenner, 1965;Riche & Pascard-Billy, 1976). The six C-C bond lengths in the benzene ring average 1.387…”