Methyl 2-((2Z,5Z)-2-{(E)-2-[1-(4-hy­droxy­phen­yl)ethyl­idene]hydrazin-1-yl­idene}-4-oxo-3-phenyl-1,3-thia­zolidin-5-yl­idene)acetate

In the title compound, C(20)H(17)N(3)O(4)S, all non-H atoms, except those of the phenyl ring, are approximately coplanar [maximum deviation = 0.2214 (1) Å], and the dihedral angle between their best plane and the benzene ring is 53.13 (1)°. A short intra­molecular O⋯S contact of 2.838 (1) Å is formed between the ester carbonyl O atom and the S atom of the thia­zolidine ring. In the crystal, mol­ecules associated via O—H⋯O, C—H⋯O and C—H⋯S hydrogen bonds form layers parallel to (010), with only C—H⋯O-type short contacts between the mol­ecules in adjacent layers.