<|im_start|>system
Please reason step by step, and put your final answer within \boxed{}.<|im_end|>
<|im_start|>user
Given the following CIF representation:
data_Ba7Al6
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   10.16
_cell_length_b   10.16
_cell_length_c   10.16
_cell_angle_alpha   49.31
_cell_angle_beta   49.31
_cell_angle_gamma   49.31
_symmetry_Int_Tables_number   1
_chemical_formula_structural   Ba7Al6
_chemical_formula_sum   'Ba7 Al6'
_cell_volume   554.57
_cell_formula_units_Z   1
loop_
 _symmetry_equiv_pos_site_id
 _symmetry_equiv_pos_as_xyz
  1  'x, y, z'
loop_
 _atom_site_type_symbol
 _atom_site_label
 _atom_site_symmetry_multiplicity
 _atom_site_fract_x
 _atom_site_fract_y
 _atom_site_fract_z
 _atom_site_occupancy
  Ba  Ba6  1  0.87  0.92  0.07  1.0
  Ba  Ba7  1  0.13  0.92  0.07  1.0
  Ba  Ba8  1  0.0  0.16  0.07  1.0
  Ba  Ba9  1  0.13  0.08  0.65  1.0
  Ba  Ba10  1  0.0  0.84  0.65  1.0
  Ba  Ba11  1  0.87  0.08  0.65  1.0
  Ba  Ba12  1  0.0  0.0  0.0  1.0
  Al  Al0  1  0.0  0.0  0.08  1.0
  Al  Al1  1  0.0  0.0  0.64  1.0
  Al  Al2  1  0.0  0.0  0.54  1.0
  Al  Al3  1  0.0  0.0  0.18  1.0
  Al  Al4  1  0.0  0.0  0.04  1.0
  Al  Al5  1  0.0  0.0  0.68  1.0

What is the crystal system of this material?<|im_end|>
<|im_start|>assistant
Given the following CIF representation:
data_Ba7Al6
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   10.16
_cell_length_b   10.16
_cell_length_c   10.16
_cell_angle_alpha   49.31
_cell_angle_beta   49.31
_cell_angle_gamma   49.31
_symmetry_Int_Tables_number   1
_chemical_formula_structural   Ba7Al6
_chemical_formula_sum   'Ba7 Al6'
_cell_volume   554.57
_cell_formula_units_Z   1
loop_
 _symmetry_equiv_pos_site_id
 _symmetry_equiv_pos_as_xyz
  1  'x, y, z'
loop_
 _atom_site_type_symbol
 _atom_site_label
 _atom_site_symmetry_multiplicity
 _atom_site_fract_x
 _atom_site_fract_y
 _atom_site_fract_z
 _atom_site_occupancy
  Ba  Ba6  1  0.87  0.92  0.07  1.0
  Ba  Ba7  1  0.13  0.92  0.07  1.0
  Ba  Ba8  1  0.0  0.16  0.07  1.0
  Ba  Ba9  1  0.13  0.08  0.65  1.0
  Ba  Ba10  1  0.0  0.84  0.65  1.0
  Ba  Ba11  1  0.87  0.08  0.65  1.0
  Ba  Ba12  1  0.0  0.0  0.0  1.0
  Al  Al0  1  0.0  0.0  0.08  1.0
  Al  Al1  1  0.0  0.0  0.64  1.0
  Al  Al2  1  0.0  0.0  0.54  1.0
  Al  Al3  1  0.0  0.0  0.18  1.0
  Al  Al4  1  0.0  0.0  0.04  1.0
  Al  Al5  1  0.0  0.0  0.68  1.0

What is the crystal system of this material?