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In the title compound, C18H29BrN4, both piperazine rings assume a chair conformation. Weak intermolecular C—H...Br interactions result in dimeric associations in the crystal structure. There are no further interactions between neighbouring dimer units.doi:10.1107/s1600536807049781 fatcat:3efuzb5y5zf6dkjpzt7uvieqi4