The title compound {systematic name: N-cyclo-hexyl-carba-moyl-4-[2-(7-meth-oxy-4,4-dimethyl-1,3-dioxo-1,2,3,4-tetra-hydro-isoquinolin-2-yl)eth-yl]benzene-sulfonamide}, C(27)H(33)N(3)O(6)S, displays an intra-molecular N-H⋯O=S inter-action, as well as inter-molecular N-H⋯O=C hydrogen bonds. The latter inter-actions lead to the formation of hydrogen-bonded chains parallel to the c axis. The conformation of the sulfonyl-urea fragment is in agreement with a recent theoretical study [Kasetti et al. (2010 ▶). J. Phys. Chem. B, 114, 11603-11610].