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pubmed:abstractText |
The mol-ecule of the title compound, C(4)H(2)N(2)O(4), is located around an inversion center and the four O atoms are in the 2,3,5,6-positions of the piperazine ring. In the crystal, bifurcated N-H?O hydrogen bonds link the mol-ecules into a corrugated layer parallel to (101).
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