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The title mol­ecule, C30H24O4, lies about an inversion center located at the mid-point of the central C=C bond. The diphenyl­methanone unit adopts an all-trans conformation. The dihedral angle between the adjacent rings is 53.57 (4)°.

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The title Schiff base, C13H13NO2S, adopts the phenol–imine tautomeric form and reveals an intra­molecular O—H...N hydrogen bond involving the hy­droxy group and the imino N atom, forming an S(6) ring. The mol­ecule is highly twisted with respect to the central imine group, which is reflected in the dihedral angle of 67.83 (10)° formed by the thienyl and phenol rings. The crystal packing is characterized by weak C—H...O and C—H...π inter­actions.
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