<|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_BaAu4
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   8.63
_cell_length_b   8.63
_cell_length_c   8.63
_cell_angle_alpha   109.47
_cell_angle_beta   109.47
_cell_angle_gamma   109.47
_symmetry_Int_Tables_number   1
_chemical_formula_structural   BaAu4
_chemical_formula_sum   'Ba4 Au16'
_cell_volume   493.97
_cell_formula_units_Z   4
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  Ba16  1  0.16  0.16  0.16  1.0
  Ba  Ba17  1  0.18  0.82  0.82  1.0
  Ba  Ba18  1  0.82  0.18  0.82  1.0
  Ba  Ba19  1  0.82  0.82  0.18  1.0
  Au  Au0  1  0.96  0.96  0.96  1.0
  Au  Au1  1  0.98  0.02  0.02  1.0
  Au  Au2  1  0.02  0.98  0.02  1.0
  Au  Au3  1  0.02  0.02  0.98  1.0
  Au  Au4  1  0.0  0.0  0.42  1.0
  Au  Au5  1  0.0  0.0  0.54  1.0
  Au  Au6  1  0.0  0.42  0.0  1.0
  Au  Au7  1  0.0  0.54  0.0  1.0
  Au  Au8  1  0.42  0.0  0.0  1.0
  Au  Au9  1  0.54  0.0  0.0  1.0
  Au  Au10  1  0.98  0.0  0.49  1.0
  Au  Au11  1  0.0  0.98  0.49  1.0
  Au  Au12  1  0.0  0.49  0.98  1.0
  Au  Au13  1  0.98  0.49  0.0  1.0
  Au  Au14  1  0.49  0.98  0.0  1.0
  Au  Au15  1  0.49  0.0  0.98  1.0

What is the crystal system of this material?<|im_end|>
<|im_start|>assistant
Given the following CIF representation:
data_BaAu4
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   8.63
_cell_length_b   8.63
_cell_length_c   8.63
_cell_angle_alpha   109.47
_cell_angle_beta   109.47
_cell_angle_gamma   109.47
_symmetry_Int_Tables_number   1
_chemical_formula_structural   BaAu4
_chemical_formula_sum   'Ba4 Au16'
_cell_volume   493.97
_cell_formula_units_Z   4
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  Ba16  1  0.16  0.16  0.16  1.0
  Ba  Ba17  1  0.18  0.82  0.82  1.0
  Ba  Ba18  1  0.82  0.18  0.82  1.0
  Ba  Ba19  1  0.82  0.82  0.18  1.0
  Au  Au0  1  0.96  0.96  0.96  1.0
  Au  Au1  1  0.98  0.02  0.02  1.0
  Au  Au2  1  0.02  0.98  0.02  1.0
  Au  Au3  1  0.02  0.02  0.98  1.0
  Au  Au4  1  0.0  0.0  0.42  1.0
  Au  Au5  1  0.0  0.0  0.54  1.0
  Au  Au6  1  0.0  0.42  0.0  1.0
  Au  Au7  1  0.0  0.54  0.0  1.0
  Au  Au8  1  0.42  0.0  0.0  1.0
  Au  Au9  1  0.54  0.0  0.0  1.0
  Au  Au10  1  0.98  0.0  0.49  1.0
  Au  Au11  1  0.0  0.98  0.49  1.0
  Au  Au12  1  0.0  0.49  0.98  1.0
  Au  Au13  1  0.98  0.49  0.0  1.0
  Au  Au14  1  0.49  0.98  0.0  1.0
  Au  Au15  1  0.49  0.0  0.98  1.0

What is the crystal system of this material?