<|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_TaTl2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.7
_cell_length_b   5.7
_cell_length_c   9.5
_cell_angle_alpha   102.78
_cell_angle_beta   102.78
_cell_angle_gamma   31.36
_symmetry_Int_Tables_number   1
_chemical_formula_structural   TaTl2
_chemical_formula_sum   'Ta2 Tl4'
_cell_volume   156.35
_cell_formula_units_Z   2
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
  Ta  Ta0  1  0.99  0.0  0.82  1.0
  Ta  Ta1  1  0.67  0.0  0.75  1.0
  Tl  Tl2  1  0.94  0.0  0.38  1.0
  Tl  Tl3  1  0.56  0.0  0.73  1.0
  Tl  Tl4  1  0.94  0.0  0.13  1.0
  Tl  Tl5  1  0.08  0.0  0.47  1.0

What is the crystal system of this material?<|im_end|>
<|im_start|>assistant
Given the following CIF representation:
data_TaTl2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.7
_cell_length_b   5.7
_cell_length_c   9.5
_cell_angle_alpha   102.78
_cell_angle_beta   102.78
_cell_angle_gamma   31.36
_symmetry_Int_Tables_number   1
_chemical_formula_structural   TaTl2
_chemical_formula_sum   'Ta2 Tl4'
_cell_volume   156.35
_cell_formula_units_Z   2
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
  Ta  Ta0  1  0.99  0.0  0.82  1.0
  Ta  Ta1  1  0.67  0.0  0.75  1.0
  Tl  Tl2  1  0.94  0.0  0.38  1.0
  Tl  Tl3  1  0.56  0.0  0.73  1.0
  Tl  Tl4  1  0.94  0.0  0.13  1.0
  Tl  Tl5  1  0.08  0.0  0.47  1.0

What is the crystal system of this material?