3x3x1 monolayer supercell of 2H-MoS2 (mp-1018809), extracted from the bulk supercell by keeping only one MoS2 layer. 27 atoms (Mo9S18), ~9 Å vacuum on each side. The supercell route expanded the full bulk unit cell (which contains two layers), so the bilayer appearance was from keeping both layers of the 2H structure.