<|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_Zn2Se
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   4.85
_cell_length_b   4.85
_cell_length_c   22.44
_cell_angle_alpha   90.0
_cell_angle_beta   90.0
_cell_angle_gamma   120.0
_symmetry_Int_Tables_number   1
_chemical_formula_structural   Zn2Se
_chemical_formula_sum   'Zn16 Se8'
_cell_volume   456.24
_cell_formula_units_Z   8
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
  Zn  Zn8  1  0.0  0.8  0.06  1.0
  Zn  Zn9  1  0.42  0.4  0.38  1.0
  Zn  Zn10  1  0.42  0.4  0.84  1.0
  Zn  Zn11  1  0.0  0.8  0.6  1.0
  Zn  Zn12  1  0.21  0.1  0.22  1.0
  Zn  Zn13  1  0.42  0.0  0.22  1.0
  Zn  Zn14  1  0.79  0.1  0.22  1.0
  Zn  Zn15  1  0.21  0.1  0.0  1.0
  Zn  Zn16  1  0.42  0.0  0.0  1.0
  Zn  Zn17  1  0.79  0.1  0.0  1.0
  Zn  Zn18  1  0.78  0.5  0.83  1.0
  Zn  Zn19  1  0.0  0.39  0.83  1.0
  Zn  Zn20  1  0.22  0.5  0.83  1.0
  Zn  Zn21  1  0.64  0.7  0.61  1.0
  Zn  Zn22  1  0.42  0.8  0.61  1.0
  Zn  Zn23  1  0.21  0.7  0.61  1.0
  Se  Se0  1  0.0  0.0  0.07  1.0
  Se  Se1  1  0.0  0.0  0.37  1.0
  Se  Se2  1  0.0  0.0  0.85  1.0
  Se  Se3  1  0.0  0.0  0.59  1.0
  Se  Se4  1  0.0  0.8  0.45  1.0
  Se  Se5  1  0.42  0.4  0.99  1.0
  Se  Se6  1  0.42  0.4  0.67  1.0
  Se  Se7  1  0.0  0.8  0.77  1.0

What is the crystal system of this material?<|im_end|>
<|im_start|>assistant
Given the following CIF representation:
data_Zn2Se
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   4.85
_cell_length_b   4.85
_cell_length_c   22.44
_cell_angle_alpha   90.0
_cell_angle_beta   90.0
_cell_angle_gamma   120.0
_symmetry_Int_Tables_number   1
_chemical_formula_structural   Zn2Se
_chemical_formula_sum   'Zn16 Se8'
_cell_volume   456.24
_cell_formula_units_Z   8
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
  Zn  Zn8  1  0.0  0.8  0.06  1.0
  Zn  Zn9  1  0.42  0.4  0.38  1.0
  Zn  Zn10  1  0.42  0.4  0.84  1.0
  Zn  Zn11  1  0.0  0.8  0.6  1.0
  Zn  Zn12  1  0.21  0.1  0.22  1.0
  Zn  Zn13  1  0.42  0.0  0.22  1.0
  Zn  Zn14  1  0.79  0.1  0.22  1.0
  Zn  Zn15  1  0.21  0.1  0.0  1.0
  Zn  Zn16  1  0.42  0.0  0.0  1.0
  Zn  Zn17  1  0.79  0.1  0.0  1.0
  Zn  Zn18  1  0.78  0.5  0.83  1.0
  Zn  Zn19  1  0.0  0.39  0.83  1.0
  Zn  Zn20  1  0.22  0.5  0.83  1.0
  Zn  Zn21  1  0.64  0.7  0.61  1.0
  Zn  Zn22  1  0.42  0.8  0.61  1.0
  Zn  Zn23  1  0.21  0.7  0.61  1.0
  Se  Se0  1  0.0  0.0  0.07  1.0
  Se  Se1  1  0.0  0.0  0.37  1.0
  Se  Se2  1  0.0  0.0  0.85  1.0
  Se  Se3  1  0.0  0.0  0.59  1.0
  Se  Se4  1  0.0  0.8  0.45  1.0
  Se  Se5  1  0.42  0.4  0.99  1.0
  Se  Se6  1  0.42  0.4  0.67  1.0
  Se  Se7  1  0.0  0.8  0.77  1.0

What is the crystal system of this material?