data_UREA
_symmetry_space_group_name_H-M   'P -4 21 m'
_symmetry_Int_Tables_number      113
loop_
_symmetry_equiv_pos_site_id
_symmetry_equiv_pos_as_xyz
1 x,y,z
2 y,-x,-z
3 1/2+x,1/2-y,-z
4 -x,-y,z
5 1/2-y,1/2-x,z
6 -y,x,-z
7 1/2-x,1/2+y,-z
8 1/2+y,1/2+x,z

_cell_length_a                   5.5890
_cell_length_b                   5.5890
_cell_length_c                   4.6947
_cell_angle_alpha                90
_cell_angle_beta                 90
_cell_angle_gamma                90

loop_
_atom_site_label
_atom_site_type_symbol
_atom_site_fract_x
_atom_site_fract_y
_atom_site_fract_z
C1 C 0.0000 0.5000 0.3283
O1 O 0.0000 0.5000 0.5963
N1 N 0.1447 0.6447 0.1784
H1 H 0.2552 0.7552 0.2845
H2 H 0.1428 0.6428 -0.0339