(E)-4-Hy­droxy-N′-(3,4,5-trimeth­oxy­benzyl­idene)benzohydrazide

The title benzohydrazide derivative, C(17)H(18)N(2)O(5), exists in a trans conformation with respect to the C=N double bond. The dihedral angle between the benzene rings is 19.41 (5)°. The two meth­oxy groups at the meta positions of the trimeth­oxy­benzene group are almost coplanar with the ring [C—O—C—C = 1.62 (16) and 178.33 (10)°], whereas the third meth­oxy group, at the para position, is (+)-synclinal with the ring. In the crystal, mol­ecules are linked by N—H⋯O and bifurcated O—H⋯(N,O) hydrogen bonds, as well as weak C—H⋯O inter­actions, into sheets lying parallel to the ac plane. A C—H⋯π inter­action also occurs.