In the crystal structure of the title compound, C(15)H(20)N(2)O(3)S, the hy-droxy group is involved in the formation of O-H⋯N hydrogen bonds, which link two mol-ecules into a centrosymmetric dimer. Weak C-H⋯O hydrogen bonds further link these dimers into chains propagating along the a axis. The crystal packing exhibits π-π inter-actions between the five- and six-membered rings of neighbouring mol-ecules [centroid-centroid distance = 3.819 (2) Å] and short inter-molecular S⋯S contacts of 3.495 (1) Å.