<|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_CaPb5
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   6.7
_cell_length_b   6.7
_cell_length_c   8.24
_cell_angle_alpha   105.04
_cell_angle_beta   105.04
_cell_angle_gamma   31.94
_symmetry_Int_Tables_number   1
_chemical_formula_structural   CaPb5
_chemical_formula_sum   'Ca1 Pb5'
_cell_volume   188.23
_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
  Ca  Ca0  1  0.01  0.0  0.0  1.0
  Pb  Pb1  1  0.86  0.0  0.68  1.0
  Pb  Pb2  1  0.79  0.0  0.27  1.0
  Pb  Pb3  1  0.38  0.0  0.2  1.0
  Pb  Pb4  1  0.36  0.0  0.84  1.0
  Pb  Pb5  1  0.2  0.0  0.5  1.0

What is the crystal system of this material?<|im_end|>
<|im_start|>assistant
Given the following CIF representation:
data_CaPb5
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   6.7
_cell_length_b   6.7
_cell_length_c   8.24
_cell_angle_alpha   105.04
_cell_angle_beta   105.04
_cell_angle_gamma   31.94
_symmetry_Int_Tables_number   1
_chemical_formula_structural   CaPb5
_chemical_formula_sum   'Ca1 Pb5'
_cell_volume   188.23
_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
  Ca  Ca0  1  0.01  0.0  0.0  1.0
  Pb  Pb1  1  0.86  0.0  0.68  1.0
  Pb  Pb2  1  0.79  0.0  0.27  1.0
  Pb  Pb3  1  0.38  0.0  0.2  1.0
  Pb  Pb4  1  0.36  0.0  0.84  1.0
  Pb  Pb5  1  0.2  0.0  0.5  1.0

What is the crystal system of this material?