N-(3-Cyano-2-oxo-2,5,6,7,8,9-hexa­hydro-1H-cyclo­hepta­[b]­pyridin-1-yl)-4-methyl­benzene­sulfon­amide

The title compound, C₁₈H₁₉N₃O₃S, was identified as one of two possible isomers. Key bond lengths are N—N 1.402 (2) Å and N—S 1.6894 (18) Å. Classical hydrogen bonds N—H⋯O connect the mol­ecules to form inversion-symmetric dimers, which are further linked by a weak C—H⋯O hydrogen bond, forming ribbons.