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The title compound, C 8 H 12 N 4 O 4 , was obtained by cyclization of the two  l -asparagine mol­ecules and reveals a crystallographic inversion symmetry, and accordingly the two stereogenic centres are of opposite chirality. Thus, an asymmetric unit comprises a half of a mol­ecule. The mol­ecules are assembled into a three-dimensional hydrogen-bonding network by N—H⋯O hydrogen bonds.

meso-3,6-Dioxopiperazine-2,5-diacetamide