http://qiserver.ugr.es/cod/1004051.cif
http://qiserver.ugr.es/cod/1527728.cif
http://qiserver.ugr.es/cod/1527729.cif
http://qiserver.ugr.es/cod/1528167.cif
http://qiserver.ugr.es/cod/1539044.cif