only parse cif chem_comp data when chem_comp_atom is present too
only parse cif chem_comp data when chem_comp_atom is present too

fredludlow/ngl,j0kaso/ngl,arose/ngl,arose/ngl,j0kaso/ngl,fredludlow/ngl,fredludlow/ngl,j0kaso/ngl,arose/ngl,arose/ngl,fredludlow/ngl