Acta Cryst. (2013). E69, o761 [ doi:10.1107/S1600536813010131 ]
Abstract: In the title compound, C18H21F3N4O4, the piperazine ring adopts a chair conformation and the dihedral angle between the oxadiazole and benzene rings is 6.45 (14)°. The C atoms and their attached H atoms in the piperazine ring are disordered, with site-occupation factors of 0.576 (12) and 0.424 (12). In the crystal, molecules are linked through weak C-HO interactions, generating an R22(12) motif. Further, secondary C-HO intermolecular interactions link the molecules into C(6) chains along .
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