<|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_Nb2Tl
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.79
_cell_length_b   5.79
_cell_length_c   7.25
_cell_angle_alpha   103.96
_cell_angle_beta   103.96
_cell_angle_gamma   30.56
_symmetry_Int_Tables_number   1
_chemical_formula_structural   Nb2Tl
_chemical_formula_sum   'Nb4 Tl2'
_cell_volume   119.77
_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
  Nb  Nb0  1  0.01  0.0  0.05  1.0
  Nb  Nb1  1  0.79  0.0  0.26  1.0
  Nb  Nb2  1  0.53  0.0  0.62  1.0
  Nb  Nb3  1  0.79  0.0  0.02  1.0
  Tl  Tl4  1  0.51  0.0  0.26  1.0
  Tl  Tl5  1  0.45  0.0  0.67  1.0

What is the crystal system of this material?<|im_end|>
<|im_start|>assistant
Given the following CIF representation:
data_Nb2Tl
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.79
_cell_length_b   5.79
_cell_length_c   7.25
_cell_angle_alpha   103.96
_cell_angle_beta   103.96
_cell_angle_gamma   30.56
_symmetry_Int_Tables_number   1
_chemical_formula_structural   Nb2Tl
_chemical_formula_sum   'Nb4 Tl2'
_cell_volume   119.77
_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
  Nb  Nb0  1  0.01  0.0  0.05  1.0
  Nb  Nb1  1  0.79  0.0  0.26  1.0
  Nb  Nb2  1  0.53  0.0  0.62  1.0
  Nb  Nb3  1  0.79  0.0  0.02  1.0
  Tl  Tl4  1  0.51  0.0  0.26  1.0
  Tl  Tl5  1  0.45  0.0  0.67  1.0

What is the crystal system of this material?