4-Nitro­benzyl 3,4-bis­(acet­yloxy)-2-(4-meth­oxy­phen­yl)pyrrolidine-1-carboxyl­ate: crystal structure, Hirshfeld surface analysis and computational chemistry

The title compound, C(23)H(24)N(2)O(9), is a tetra-substituted pyrrolidine derivative with a twisted conformation, with the twist evident in the C—C bond bearing the adjacent acet­yloxy substituents. These are flanked on one side by a C-bound 4-meth­oxy­phen­yl group and on the other by a methyl­ene group. The almost sp (2)-N atom [sum of angles = 357°] bears a 4-nitro­benzyl­oxycarbonyl substituent. In the crystal, ring-methyl­ene-C—H⋯O(acet­yloxy-carbon­yl) and methyl­ene-C—H⋯O(carbon­yl) inter­actions lead to supra­molecular layers lying parallel to ([Image: see text]01); the layers stack without directional inter­actions between them. The analysis of the calculated Hirshfeld surfaces indicates the combined importance of H⋯H (42.3%), H⋯O/O⋯H (37.3%) and H⋯C/C⋯H (14.9%) surface contacts. Further, the inter­action energies, largely dominated by the dispersive term, point to the stabilizing influence of H⋯H and O⋯O contacts in the inter-layer region.