(E)-3,4,5-Trimeth­oxy-N′-[(4-oxo-4H-chromen-3-yl)methyl­idene]benzo­hydrazide

In the title chromone-tethered benzohydrazide derivative, C(20)H(18)N(2)O(6), the atoms of the E-3-(hydrazonometh­yl)-4H-chromen-4-one segment are essentially coplanar, the largest deviation being 0.065 (6) Å. The dihedral angle between this segment and the benzene ring of the tri­meth­oxy­benzene unit is 40.18 (10) Å. In the crystal, the mol­ecule is linked to its inverse-symmetry equivalent by pairs of N—H⋯O hydrogen bonds and C—H⋯π inter­actions. The –CH=N—NH– segment is stacked on the benzene ring of the chromone unit of a translation-related equivalent mol­ecule [centroid–centroid distance = 3.413 (6) Å].