transitive_group_id: [18,561]

 Description: (C3 x C3 x C3 x C3) : ((C8 . D4 = C4 . (C8 x C2)) : C2) 

 Stabilizer: (C3 x C3) : (C8 : Q8) 

Density: 1

Join: True 

Spectrum: [(5248, 1), (-5120, 1), (64, 126), (1, 8192), (-8, 2048)]