<|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_Pr(MnSn)6
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   15.26
_cell_length_b   15.26
_cell_length_c   15.26
_cell_angle_alpha   159.18
_cell_angle_beta   145.07
_cell_angle_gamma   41.02
_symmetry_Int_Tables_number   1
_chemical_formula_structural   Pr(MnSn)6
_chemical_formula_sum   'Pr3 Mn18 Sn18'
_cell_volume   721.9
_cell_formula_units_Z   3
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
  Pr  Pr0  1  0.76  0.0  0.83  1.0
  Pr  Pr1  1  0.0  0.58  0.46  1.0
  Pr  Pr2  1  0.0  0.0  0.0  1.0
  Mn  Mn3  1  0.0  0.3  0.29  1.0
  Mn  Mn4  1  0.76  0.28  0.0  1.0
  Mn  Mn5  1  0.38  0.71  0.15  1.0
  Mn  Mn6  1  0.38  0.29  0.15  1.0
  Mn  Mn7  1  0.62  0.29  0.15  1.0
  Mn  Mn8  1  0.38  0.29  0.85  1.0
  Mn  Mn9  1  0.76  0.71  0.53  1.0
  Mn  Mn10  1  0.0  0.29  0.76  1.0
  Mn  Mn11  1  0.76  0.29  0.53  1.0
  Mn  Mn12  1  0.0  0.87  0.76  1.0
  Mn  Mn13  1  0.62  0.3  0.68  1.0
  Mn  Mn14  1  0.38  0.3  0.91  1.0
  Mn  Mn15  1  0.14  0.28  0.38  1.0
  Mn  Mn16  1  0.38  0.28  0.62  1.0
  Mn  Mn17  1  0.14  0.28  0.62  1.0
  Mn  Mn18  1  0.38  0.28  0.38  1.0
  Mn  Mn19  1  0.62  0.3  0.91  1.0
  Mn  Mn20  1  0.38  0.3  0.68  1.0
  Sn  Sn21  1  0.76  0.0  0.61  1.0
  Sn  Sn22  1  0.0  0.58  0.68  1.0
  Sn  Sn23  1  0.0  0.0  0.88  1.0
  Sn  Sn24  1  0.0  0.0  0.71  1.0
  Sn  Sn25  1  0.0  0.0  0.21  1.0
  Sn  Sn26  1  0.0  0.0  0.38  1.0
  Sn  Sn27  1  0.0  0.58  0.14  1.0
  Sn  Sn28  1  0.76  0.0  0.15  1.0
  Sn  Sn29  1  0.0  0.0  0.42  1.0
  Sn  Sn30  1  0.0  0.0  0.17  1.0
  Sn  Sn31  1  0.0  0.58  0.26  1.0
  Sn  Sn32  1  0.76  0.0  0.03  1.0
  Sn  Sn33  1  0.0  0.09  0.0  1.0
  Sn  Sn34  1  0.0  0.07  0.0  1.0
  Sn  Sn35  1  0.0  0.51  0.04  1.0
  Sn  Sn36  1  0.0  0.51  0.54  1.0
  Sn  Sn37  1  0.76  0.08  0.75  1.0
  Sn  Sn38  1  0.76  0.08  0.25  1.0

What is the crystal system of this material?<|im_end|>
<|im_start|>assistant
Given the following CIF representation:
data_Pr(MnSn)6
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   15.26
_cell_length_b   15.26
_cell_length_c   15.26
_cell_angle_alpha   159.18
_cell_angle_beta   145.07
_cell_angle_gamma   41.02
_symmetry_Int_Tables_number   1
_chemical_formula_structural   Pr(MnSn)6
_chemical_formula_sum   'Pr3 Mn18 Sn18'
_cell_volume   721.9
_cell_formula_units_Z   3
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
  Pr  Pr0  1  0.76  0.0  0.83  1.0
  Pr  Pr1  1  0.0  0.58  0.46  1.0
  Pr  Pr2  1  0.0  0.0  0.0  1.0
  Mn  Mn3  1  0.0  0.3  0.29  1.0
  Mn  Mn4  1  0.76  0.28  0.0  1.0
  Mn  Mn5  1  0.38  0.71  0.15  1.0
  Mn  Mn6  1  0.38  0.29  0.15  1.0
  Mn  Mn7  1  0.62  0.29  0.15  1.0
  Mn  Mn8  1  0.38  0.29  0.85  1.0
  Mn  Mn9  1  0.76  0.71  0.53  1.0
  Mn  Mn10  1  0.0  0.29  0.76  1.0
  Mn  Mn11  1  0.76  0.29  0.53  1.0
  Mn  Mn12  1  0.0  0.87  0.76  1.0
  Mn  Mn13  1  0.62  0.3  0.68  1.0
  Mn  Mn14  1  0.38  0.3  0.91  1.0
  Mn  Mn15  1  0.14  0.28  0.38  1.0
  Mn  Mn16  1  0.38  0.28  0.62  1.0
  Mn  Mn17  1  0.14  0.28  0.62  1.0
  Mn  Mn18  1  0.38  0.28  0.38  1.0
  Mn  Mn19  1  0.62  0.3  0.91  1.0
  Mn  Mn20  1  0.38  0.3  0.68  1.0
  Sn  Sn21  1  0.76  0.0  0.61  1.0
  Sn  Sn22  1  0.0  0.58  0.68  1.0
  Sn  Sn23  1  0.0  0.0  0.88  1.0
  Sn  Sn24  1  0.0  0.0  0.71  1.0
  Sn  Sn25  1  0.0  0.0  0.21  1.0
  Sn  Sn26  1  0.0  0.0  0.38  1.0
  Sn  Sn27  1  0.0  0.58  0.14  1.0
  Sn  Sn28  1  0.76  0.0  0.15  1.0
  Sn  Sn29  1  0.0  0.0  0.42  1.0
  Sn  Sn30  1  0.0  0.0  0.17  1.0
  Sn  Sn31  1  0.0  0.58  0.26  1.0
  Sn  Sn32  1  0.76  0.0  0.03  1.0
  Sn  Sn33  1  0.0  0.09  0.0  1.0
  Sn  Sn34  1  0.0  0.07  0.0  1.0
  Sn  Sn35  1  0.0  0.51  0.04  1.0
  Sn  Sn36  1  0.0  0.51  0.54  1.0
  Sn  Sn37  1  0.76  0.08  0.75  1.0
  Sn  Sn38  1  0.76  0.08  0.25  1.0

What is the crystal system of this material?