organic compounds
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In the title compound, C15H15NO4S, the dihedral angle between the benzene rings is 88.87 (1)°. In the crystal, adjacent molecules form inversion dimers through pairs of strong N—HO hydrogen bonds, generating R22(8) loops. Two C—Hπ interactions and an aromatic π–π interaction [centroid–centroid separation = 3.8191 (1) Å] are also observed.