http://qiserver.ugr.es/cod/9011943.cif
http://qiserver.ugr.es/cod/9014106.cif
http://qiserver.ugr.es/cod/9015694.cif
http://qiserver.ugr.es/cod/9016028.cif
http://qiserver.ugr.es/cod/9016667.cif