Crystal structure of 2-methyl­amino-4-(6-methyl-4-oxo-4H-chromen-3-yl)-3-nitro­pyrano[3,2-c]chromen-5(4H)-one with an unknown solvate

In the title compound, C(23)H(16)N(2)O(7), the mean planes of the two chromene units (r.m.s. deviations = 0.031 and 0.064 Å) are almost normal to one another with a dihedral angle of 85.59 (6)°. The central six-membered pyran ring has a distorted envelope conformation, with the methine C atom at the flap. There is an intra­molecular N—H⋯O hydrogen bond, which generates an S(6) ring motif. In the crystal, mol­ecules are linked by pairs of N—H⋯O hydrogen bonds, forming inversion dimers with an R (2) (2)(12) ring motif. The dimers are linked by pairs of C—H⋯O hydrogen bonds, enclosing R (2) (2)(6) ring motifs, forming zigzag chains along [001]. The chains are linked by a second pair of C—H⋯O hydrogen bonds, forming slabs parallel to (110). Within the slabs there are C—H⋯π inter­actions present. A region of disordered electron density was treated with the SQUEEZE procedure in PLATON [Spek (2015 ▸). Acta Cryst. C71, 9–18] following unsuccessful attempts to model it as plausible solvent mol­ecule(s). The given chemical formula and other crystal data do not take into account the unknown solvent mol­ecule(s).