title: 1'-Phenyl-6'-thia-cyclo-heptane-1-spiro-2'-perhydro-pyrrolizine-3'-spiro-3''-indoline-2,2''-dione.
abstract: The thia-zolidine ring and the pyrrolidine ring in the title compound, C(25)H(26)N(2)O(2)S, both adopt an envelope conformation. The seven-membered ring has a twist-chair conformation. The crystal packing is stabilized by inter-molecular N-H⋯O hydrogen bonds.
authors.forename: S
authors.initials: S
authors.lastname: Sundaramoorthy
authors.forename: D
authors.initials: D
authors.lastname: Gayathri
authors.forename: D
authors.initials: D
authors.lastname: Velmurugan
authors.forename: M
authors.initials: M
authors.lastname: Poornachandran
authors.forename: K
authors.initials: K
authors.lastname: Ravikumar