Ethyl 4-(4-nitro-phen-yl)-2-(trifluoro-meth-yl)pyrimido[1,2-a]benzimidazole-3-carboxyl-ate.

In the title compound, C(20)H(13)F(3)N(4)O(4), the fused pyrimido[1,2-a]benzimidazole ring system is nearly planar, with a maximum deviation from the mean plane of 0.126†(1)†à . Mol-ecules are linked by C-H⋯N and C-H⋯O hydrogen bonds and by π-π inter-actions with inter-planar distances of 3.2661†(6) and 3.2775†(6)†à .