http://qiserver.ugr.es/cod/1508997.cif
http://qiserver.ugr.es/cod/1509023.cif
http://qiserver.ugr.es/cod/1509029.cif
http://qiserver.ugr.es/cod/1509050.cif
http://qiserver.ugr.es/cod/1532711.cif
http://qiserver.ugr.es/cod/1533637.cif
http://qiserver.ugr.es/cod/1533859.cif