data_space_group_symop
_publ_author_name                'Surname, Name'
_publ_section_title              Title
_journal_name_full               Journal
_journal_page_first              1
_journal_year                    1968
_chemical_formula_sum            C
loop_
_space_group_symop_id
_space_group_symop_operation_xyz
1 x,y,z
2 -x,-y,-z
