http://qiserver.ugr.es/cod/1523973.cif
http://qiserver.ugr.es/cod/1525612.cif
http://qiserver.ugr.es/cod/1525613.cif
http://qiserver.ugr.es/cod/9009269.cif
http://qiserver.ugr.es/cod/9009270.cif
http://qiserver.ugr.es/cod/9009271.cif
http://qiserver.ugr.es/cod/9009272.cif