In the title compound, C₂₆H₂₀N₄O₂S, the thiazole and pyrrolidine rings adopt envelope conformations with the respective flap atoms being the N atom and the nitro-bearing C atom. The phenyl and indenoquinoxaline planes are oriented at an angle of 66.72 (1)° to each other. The molecular structure features two intramolecular interactions,viz. C—H...N and C—H...O. In the crystal, the molecules are connected through C—H...N and C—H...O interactions, forming ring motifs [twoR₂¹(7),R₂²(14),R₂²(22) andR₂²(16)]. These ring motifs are connected through aC(9) motif chain.