Abstract
In the title compound, C15H14N2O5S, two similar molecules comprise the asymmetric unit, which are linked by strong intermolecular C-H center dot center dot center dot pi interactions. Both molecules are bent, with dihedral angles of 71.94 ( 16) and 74.62 (15)degrees between the benzene rings. An intramolecular N-H center dot center dot center dot O hydrogen bond occurs in each molecule. In the crystal, intermolecular N-H center dot center dot center dot O and O-H center dot center dot center dot O hydrogen bonds link the molecules into a three-dimensional network.