http://qiserver.ugr.es/cod/1544611.cif
http://qiserver.ugr.es/cod/1544612.cif
http://qiserver.ugr.es/cod/1544613.cif
http://qiserver.ugr.es/cod/1544846.cif
http://qiserver.ugr.es/cod/9013491.cif
http://qiserver.ugr.es/cod/9013492.cif
http://qiserver.ugr.es/cod/9013493.cif