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The O⋯H/H⋯O inter-actions amongst the cation and anion will be the significant factor determining the crystal packing.The title compound, C13H19NO8, is founded on a tetra-substituted pyrrolidine ring, which has a twisted conformation concerning the main C-C bond; the Cm-Ca-Ca-Cme torsion direction is 38.26 (15)° [m = methyl-carboxyl-ate, a = acet-yloxy and me personally = methyl-ene]. Whilst the N-bound e