C13H19O4NS, monoclinic, Cc (no. 9), a = 11.4661(6) Å, b = 11.7180(7) Å, c = 12.1509(7) Å, β = 115.395(2)°, V = 1474.84(15) Å3, Z = 4, Rgt
(F) = 0.0253, wRref
(F
2) = 0.0643, T = 200(2) K. The title compound crystallizes in a non-centrosymmetric space group.