<|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_ScSi2Ni3
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   4.61
_cell_length_b   4.61
_cell_length_c   9.6
_cell_angle_alpha   90.0
_cell_angle_beta   90.0
_cell_angle_gamma   120.0
_symmetry_Int_Tables_number   1
_chemical_formula_structural   ScSi2Ni3
_chemical_formula_sum   'Sc2 Si4 Ni6'
_cell_volume   176.72
_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
  Sc  Sc6  1  0.0  0.0  0.8  1.0
  Sc  Sc7  1  0.0  0.0  0.0  1.0
  Si  Si8  1  0.31  0.33  0.04  1.0
  Si  Si9  1  0.0  0.66  0.24  1.0
  Si  Si10  1  0.0  0.66  0.56  1.0
  Si  Si11  1  0.31  0.33  0.37  1.0
  Ni  Ni0  1  0.16  0.67  0.4  1.0
  Ni  Ni1  1  0.45  0.67  0.4  1.0
  Ni  Ni2  1  0.31  0.65  0.4  1.0
  Ni  Ni3  1  0.14  0.32  0.2  1.0
  Ni  Ni4  1  0.86  0.32  0.2  1.0
  Ni  Ni5  1  0.0  0.34  0.2  1.0

What is the crystal system of this material?<|im_end|>
<|im_start|>assistant
Given the following CIF representation:
data_ScSi2Ni3
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   4.61
_cell_length_b   4.61
_cell_length_c   9.6
_cell_angle_alpha   90.0
_cell_angle_beta   90.0
_cell_angle_gamma   120.0
_symmetry_Int_Tables_number   1
_chemical_formula_structural   ScSi2Ni3
_chemical_formula_sum   'Sc2 Si4 Ni6'
_cell_volume   176.72
_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
  Sc  Sc6  1  0.0  0.0  0.8  1.0
  Sc  Sc7  1  0.0  0.0  0.0  1.0
  Si  Si8  1  0.31  0.33  0.04  1.0
  Si  Si9  1  0.0  0.66  0.24  1.0
  Si  Si10  1  0.0  0.66  0.56  1.0
  Si  Si11  1  0.31  0.33  0.37  1.0
  Ni  Ni0  1  0.16  0.67  0.4  1.0
  Ni  Ni1  1  0.45  0.67  0.4  1.0
  Ni  Ni2  1  0.31  0.65  0.4  1.0
  Ni  Ni3  1  0.14  0.32  0.2  1.0
  Ni  Ni4  1  0.86  0.32  0.2  1.0
  Ni  Ni5  1  0.0  0.34  0.2  1.0

What is the crystal system of this material?