<|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_Sm4(ErS2)11
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   19.57
_cell_length_b   19.57
_cell_length_c   11.31
_cell_angle_alpha   91.25
_cell_angle_beta   91.25
_cell_angle_gamma   11.5
_symmetry_Int_Tables_number   1
_chemical_formula_structural   Sm4(ErS2)11
_chemical_formula_sum   'Sm4 Er11 S22'
_cell_volume   864.25
_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
  Sm  Sm0  1  0.06  0.0  0.14  1.0
  Sm  Sm1  1  0.64  0.0  0.18  1.0
  Sm  Sm2  1  0.21  0.0  0.92  1.0
  Sm  Sm3  1  0.49  0.0  0.4  1.0
  Er  Er4  1  0.08  0.0  0.65  1.0
  Er  Er5  1  0.62  0.0  0.66  1.0
  Er  Er6  1  0.92  0.0  0.08  1.0
  Er  Er7  1  0.79  0.0  0.23  1.0
  Er  Er8  1  0.54  0.0  0.42  1.0
  Er  Er9  1  0.16  0.0  0.89  1.0
  Er  Er10  1  0.21  0.0  0.98  1.0
  Er  Er11  1  0.5  0.0  0.33  1.0
  Er  Er12  1  0.61  0.0  0.07  1.0
  Er  Er13  1  0.09  0.0  0.25  1.0
  Er  Er14  1  0.0  0.0  0.0  1.0
  S  S15  1  0.25  0.0  0.51  1.0
  S  S16  1  0.46  0.0  0.8  1.0
  S  S17  1  0.15  0.0  0.83  1.0
  S  S18  1  0.55  0.0  0.48  1.0
  S  S19  1  0.76  0.0  0.67  1.0
  S  S20  1  0.94  0.0  0.64  1.0
  S  S21  1  0.25  0.0  0.61  1.0
  S  S22  1  0.46  0.0  0.71  1.0
  S  S23  1  0.12  0.0  0.16  1.0
  S  S24  1  0.59  0.0  0.15  1.0
  S  S25  1  0.04  0.0  0.38  1.0
  S  S26  1  0.66  0.0  0.94  1.0
  S  S27  1  0.61  0.0  0.36  1.0
  S  S28  1  0.09  0.0  0.96  1.0
  S  S29  1  0.68  0.0  0.04  1.0
  S  S30  1  0.03  0.0  0.27  1.0
  S  S31  1  0.51  0.0  0.71  1.0
  S  S32  1  0.2  0.0  0.61  1.0
  S  S33  1  0.25  0.0  0.7  1.0
  S  S34  1  0.46  0.0  0.61  1.0
  S  S35  1  0.9  0.0  0.35  1.0
  S  S36  1  0.8  0.0  0.96  1.0

What is the crystal system of this material?<|im_end|>
<|im_start|>assistant
Given the following CIF representation:
data_Sm4(ErS2)11
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   19.57
_cell_length_b   19.57
_cell_length_c   11.31
_cell_angle_alpha   91.25
_cell_angle_beta   91.25
_cell_angle_gamma   11.5
_symmetry_Int_Tables_number   1
_chemical_formula_structural   Sm4(ErS2)11
_chemical_formula_sum   'Sm4 Er11 S22'
_cell_volume   864.25
_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
  Sm  Sm0  1  0.06  0.0  0.14  1.0
  Sm  Sm1  1  0.64  0.0  0.18  1.0
  Sm  Sm2  1  0.21  0.0  0.92  1.0
  Sm  Sm3  1  0.49  0.0  0.4  1.0
  Er  Er4  1  0.08  0.0  0.65  1.0
  Er  Er5  1  0.62  0.0  0.66  1.0
  Er  Er6  1  0.92  0.0  0.08  1.0
  Er  Er7  1  0.79  0.0  0.23  1.0
  Er  Er8  1  0.54  0.0  0.42  1.0
  Er  Er9  1  0.16  0.0  0.89  1.0
  Er  Er10  1  0.21  0.0  0.98  1.0
  Er  Er11  1  0.5  0.0  0.33  1.0
  Er  Er12  1  0.61  0.0  0.07  1.0
  Er  Er13  1  0.09  0.0  0.25  1.0
  Er  Er14  1  0.0  0.0  0.0  1.0
  S  S15  1  0.25  0.0  0.51  1.0
  S  S16  1  0.46  0.0  0.8  1.0
  S  S17  1  0.15  0.0  0.83  1.0
  S  S18  1  0.55  0.0  0.48  1.0
  S  S19  1  0.76  0.0  0.67  1.0
  S  S20  1  0.94  0.0  0.64  1.0
  S  S21  1  0.25  0.0  0.61  1.0
  S  S22  1  0.46  0.0  0.71  1.0
  S  S23  1  0.12  0.0  0.16  1.0
  S  S24  1  0.59  0.0  0.15  1.0
  S  S25  1  0.04  0.0  0.38  1.0
  S  S26  1  0.66  0.0  0.94  1.0
  S  S27  1  0.61  0.0  0.36  1.0
  S  S28  1  0.09  0.0  0.96  1.0
  S  S29  1  0.68  0.0  0.04  1.0
  S  S30  1  0.03  0.0  0.27  1.0
  S  S31  1  0.51  0.0  0.71  1.0
  S  S32  1  0.2  0.0  0.61  1.0
  S  S33  1  0.25  0.0  0.7  1.0
  S  S34  1  0.46  0.0  0.61  1.0
  S  S35  1  0.9  0.0  0.35  1.0
  S  S36  1  0.8  0.0  0.96  1.0

What is the crystal system of this material?