http://qiserver.ugr.es/cod/1510208.cif
http://qiserver.ugr.es/cod/1523318.cif
http://qiserver.ugr.es/cod/1536633.cif
http://qiserver.ugr.es/cod/1537744.cif
http://qiserver.ugr.es/cod/1537747.cif