<|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_Ni3Ru
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.07
_cell_length_b   12.5
_cell_length_c   4.4
_cell_angle_alpha   90.0
_cell_angle_beta   90.0
_cell_angle_gamma   90.0
_symmetry_Int_Tables_number   1
_chemical_formula_structural   Ni3Ru
_chemical_formula_sum   'Ni18 Ru6'
_cell_volume   278.39
_cell_formula_units_Z   6
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
  Ni  Ni0  1  0.27  0.08  0.47  1.0
  Ni  Ni1  1  0.27  0.41  0.47  1.0
  Ni  Ni2  1  0.27  0.25  0.39  1.0
  Ni  Ni3  1  0.27  0.0  0.01  1.0
  Ni  Ni4  1  0.27  0.33  0.93  1.0
  Ni  Ni5  1  0.27  0.16  0.93  1.0
  Ni  Ni6  1  0.0  0.0  0.19  1.0
  Ni  Ni7  1  0.0  0.33  0.73  1.0
  Ni  Ni8  1  0.0  0.16  0.73  1.0
  Ni  Ni9  1  0.8  0.08  0.47  1.0
  Ni  Ni10  1  0.8  0.41  0.47  1.0
  Ni  Ni11  1  0.8  0.25  0.39  1.0
  Ni  Ni12  1  0.8  0.0  0.01  1.0
  Ni  Ni13  1  0.8  0.33  0.93  1.0
  Ni  Ni14  1  0.8  0.16  0.93  1.0
  Ni  Ni15  1  0.53  0.25  0.21  1.0
  Ni  Ni16  1  0.53  0.09  0.67  1.0
  Ni  Ni17  1  0.53  0.41  0.67  1.0
  Ru  Ru18  1  0.0  0.25  0.2  1.0
  Ru  Ru19  1  0.0  0.09  0.67  1.0
  Ru  Ru20  1  0.0  0.4  0.67  1.0
  Ru  Ru21  1  0.53  0.0  0.2  1.0
  Ru  Ru22  1  0.53  0.34  0.73  1.0
  Ru  Ru23  1  0.53  0.16  0.73  1.0

What is the crystal system of this material?<|im_end|>
<|im_start|>assistant
Given the following CIF representation:
data_Ni3Ru
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.07
_cell_length_b   12.5
_cell_length_c   4.4
_cell_angle_alpha   90.0
_cell_angle_beta   90.0
_cell_angle_gamma   90.0
_symmetry_Int_Tables_number   1
_chemical_formula_structural   Ni3Ru
_chemical_formula_sum   'Ni18 Ru6'
_cell_volume   278.39
_cell_formula_units_Z   6
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
  Ni  Ni0  1  0.27  0.08  0.47  1.0
  Ni  Ni1  1  0.27  0.41  0.47  1.0
  Ni  Ni2  1  0.27  0.25  0.39  1.0
  Ni  Ni3  1  0.27  0.0  0.01  1.0
  Ni  Ni4  1  0.27  0.33  0.93  1.0
  Ni  Ni5  1  0.27  0.16  0.93  1.0
  Ni  Ni6  1  0.0  0.0  0.19  1.0
  Ni  Ni7  1  0.0  0.33  0.73  1.0
  Ni  Ni8  1  0.0  0.16  0.73  1.0
  Ni  Ni9  1  0.8  0.08  0.47  1.0
  Ni  Ni10  1  0.8  0.41  0.47  1.0
  Ni  Ni11  1  0.8  0.25  0.39  1.0
  Ni  Ni12  1  0.8  0.0  0.01  1.0
  Ni  Ni13  1  0.8  0.33  0.93  1.0
  Ni  Ni14  1  0.8  0.16  0.93  1.0
  Ni  Ni15  1  0.53  0.25  0.21  1.0
  Ni  Ni16  1  0.53  0.09  0.67  1.0
  Ni  Ni17  1  0.53  0.41  0.67  1.0
  Ru  Ru18  1  0.0  0.25  0.2  1.0
  Ru  Ru19  1  0.0  0.09  0.67  1.0
  Ru  Ru20  1  0.0  0.4  0.67  1.0
  Ru  Ru21  1  0.53  0.0  0.2  1.0
  Ru  Ru22  1  0.53  0.34  0.73  1.0
  Ru  Ru23  1  0.53  0.16  0.73  1.0

What is the crystal system of this material?