Crystal structure of 6-(4-chloro­phen­yl)-6a-nitro-6,6a,6b,7,9,11a-hexa­hydro­spiro[chromeno[3′,4′:3,4]pyrrolo­[1,2-c]thia­zole-11,11′-indeno­[1,2-b]quinoxaline] chloro­form monosolvate

In the title compound, C(33)H(23)ClN(4)O(3)S·CHCl(3), the thia­zole ring adopts an envelope conformation with the N atom as the flap, and the pyrrolidine ring adopts a half-chair conformation. The thia­zole ring mean plane makes a dihedral angle of 59.31 (1)° with the pyrrolidine ring mean plane, 71.67 (1)° with the chromene ring and 82.59 (1)° with the chloro­benzene ring. An intra­molecular C—H⋯N hydrogen bond occurs. In the crystal, a second C—H⋯N hydrogen bond links the main and solvent mol­ecules. The solvent chloroform molecule is disordered about two positions with an occupancy ratio of 0.508 (14):0.492 (14).