<|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_SrSi2Ni
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   3.8
_cell_length_b   3.89
_cell_length_c   5.72
_cell_angle_alpha   90.0
_cell_angle_beta   96.26
_cell_angle_gamma   90.0
_symmetry_Int_Tables_number   1
_chemical_formula_structural   SrSi2Ni
_chemical_formula_sum   'Sr1 Si2 Ni1'
_cell_volume   84.12
_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
  Sr  Sr3  1  0.27  0.95  0.63  1.0
  Si  Si1  1  0.04  0.95  0.27  1.0
  Si  Si2  1  0.07  0.0  0.93  1.0
  Ni  Ni0  1  0.56  0.0  0.38  1.0

What is the crystal system of this material?<|im_end|>
<|im_start|>assistant
Given the following CIF representation:
data_SrSi2Ni
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   3.8
_cell_length_b   3.89
_cell_length_c   5.72
_cell_angle_alpha   90.0
_cell_angle_beta   96.26
_cell_angle_gamma   90.0
_symmetry_Int_Tables_number   1
_chemical_formula_structural   SrSi2Ni
_chemical_formula_sum   'Sr1 Si2 Ni1'
_cell_volume   84.12
_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
  Sr  Sr3  1  0.27  0.95  0.63  1.0
  Si  Si1  1  0.04  0.95  0.27  1.0
  Si  Si2  1  0.07  0.0  0.93  1.0
  Ni  Ni0  1  0.56  0.0  0.38  1.0

What is the crystal system of this material?