<|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_Si(CO)2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   7.43
_cell_length_b   7.43
_cell_length_c   7.43
_cell_angle_alpha   157.49
_cell_angle_beta   123.51
_cell_angle_gamma   61.58
_symmetry_Int_Tables_number   1
_chemical_formula_structural   Si(CO)2
_chemical_formula_sum   'Si2 C4 O4'
_cell_volume   130.33
_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
  Si  Si0  1  0.0  0.52  0.57  1.0
  Si  Si1  1  0.45  0.0  0.81  1.0
  C  C2  1  0.0  0.0  0.71  1.0
  C  C3  1  0.0  0.01  0.0  1.0
  C  C4  1  0.0  0.0  0.06  1.0
  C  C5  1  0.0  0.03  0.0  1.0
  O  O6  1  0.0  0.68  0.0  1.0
  O  O7  1  0.0  0.0  0.3  1.0
  O  O8  1  0.0  0.0  0.47  1.0
  O  O9  1  0.0  0.36  0.0  1.0

What is the crystal system of this material?<|im_end|>
<|im_start|>assistant
Given the following CIF representation:
data_Si(CO)2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   7.43
_cell_length_b   7.43
_cell_length_c   7.43
_cell_angle_alpha   157.49
_cell_angle_beta   123.51
_cell_angle_gamma   61.58
_symmetry_Int_Tables_number   1
_chemical_formula_structural   Si(CO)2
_chemical_formula_sum   'Si2 C4 O4'
_cell_volume   130.33
_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
  Si  Si0  1  0.0  0.52  0.57  1.0
  Si  Si1  1  0.45  0.0  0.81  1.0
  C  C2  1  0.0  0.0  0.71  1.0
  C  C3  1  0.0  0.01  0.0  1.0
  C  C4  1  0.0  0.0  0.06  1.0
  C  C5  1  0.0  0.03  0.0  1.0
  O  O6  1  0.0  0.68  0.0  1.0
  O  O7  1  0.0  0.0  0.3  1.0
  O  O8  1  0.0  0.0  0.47  1.0
  O  O9  1  0.0  0.36  0.0  1.0

What is the crystal system of this material?