Bis[N,N'-o-phenyl­enebis­(pyridine-2,6-dicarboxamide)] dimethyl­formamide solvate

In the title macrocyclic compound, 3,10,18,25,31,32-hexa­aza­penta­cyclo­[25.3.1.1^12,16.0^4,9.0^19,24]dotri­conta-1(30),4,6,8,12,14,-16(32),19,21,23,27(31),28-dodecaene-2,11,17,26-tetrone dimethyl­formamide solvate, C₂₆H₁₈N₆O₄·C₃H₇NO, the two pyridine rings are approximately perpendicular to each other, the dihedral angle between them being 82.1 (1)°. The macrocycle possesses mirror symmetry. The dihedral angle between the two benzene rings is 119.6 (1)°.