<|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_Na2BH4ClO4
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   6.98
_cell_length_b   6.98
_cell_length_c   4.68
_cell_angle_alpha   90.0
_cell_angle_beta   90.0
_cell_angle_gamma   90.0
_symmetry_Int_Tables_number   1
_chemical_formula_structural   Na2BH4ClO4
_chemical_formula_sum   'Na4 B2 H8 Cl2 O8'
_cell_volume   228.3
_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
  Na  Na12  1  0.75  0.24  0.34  1.0
  Na  Na13  1  0.24  0.75  0.34  1.0
  Na  Na14  1  0.24  0.24  0.34  1.0
  Na  Na15  1  0.75  0.75  0.34  1.0
  B  B0  1  0.0  0.0  0.0  1.0
  B  B1  1  0.49  0.49  0.0  1.0
  H  H4  1  0.49  0.44  0.29  1.0
  H  H5  1  0.49  0.54  0.29  1.0
  H  H6  1  0.0  0.03  0.39  1.0
  H  H7  1  0.0  0.95  0.39  1.0
  H  H8  1  0.54  0.49  0.39  1.0
  H  H9  1  0.44  0.49  0.39  1.0
  H  H10  1  0.95  0.0  0.29  1.0
  H  H11  1  0.03  0.0  0.29  1.0
  Cl  Cl2  1  0.49  0.0  0.48  1.0
  Cl  Cl3  1  0.0  0.49  0.2  1.0
  O  O16  1  0.49  0.67  0.9  1.0
  O  O17  1  0.49  0.31  0.9  1.0
  O  O18  1  0.0  0.8  0.79  1.0
  O  O19  1  0.0  0.18  0.79  1.0
  O  O20  1  0.31  0.49  0.79  1.0
  O  O21  1  0.67  0.49  0.79  1.0
  O  O22  1  0.18  0.0  0.9  1.0
  O  O23  1  0.8  0.0  0.9  1.0

What is the crystal system of this material?<|im_end|>
<|im_start|>assistant
Given the following CIF representation:
data_Na2BH4ClO4
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   6.98
_cell_length_b   6.98
_cell_length_c   4.68
_cell_angle_alpha   90.0
_cell_angle_beta   90.0
_cell_angle_gamma   90.0
_symmetry_Int_Tables_number   1
_chemical_formula_structural   Na2BH4ClO4
_chemical_formula_sum   'Na4 B2 H8 Cl2 O8'
_cell_volume   228.3
_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
  Na  Na12  1  0.75  0.24  0.34  1.0
  Na  Na13  1  0.24  0.75  0.34  1.0
  Na  Na14  1  0.24  0.24  0.34  1.0
  Na  Na15  1  0.75  0.75  0.34  1.0
  B  B0  1  0.0  0.0  0.0  1.0
  B  B1  1  0.49  0.49  0.0  1.0
  H  H4  1  0.49  0.44  0.29  1.0
  H  H5  1  0.49  0.54  0.29  1.0
  H  H6  1  0.0  0.03  0.39  1.0
  H  H7  1  0.0  0.95  0.39  1.0
  H  H8  1  0.54  0.49  0.39  1.0
  H  H9  1  0.44  0.49  0.39  1.0
  H  H10  1  0.95  0.0  0.29  1.0
  H  H11  1  0.03  0.0  0.29  1.0
  Cl  Cl2  1  0.49  0.0  0.48  1.0
  Cl  Cl3  1  0.0  0.49  0.2  1.0
  O  O16  1  0.49  0.67  0.9  1.0
  O  O17  1  0.49  0.31  0.9  1.0
  O  O18  1  0.0  0.8  0.79  1.0
  O  O19  1  0.0  0.18  0.79  1.0
  O  O20  1  0.31  0.49  0.79  1.0
  O  O21  1  0.67  0.49  0.79  1.0
  O  O22  1  0.18  0.0  0.9  1.0
  O  O23  1  0.8  0.0  0.9  1.0

What is the crystal system of this material?