http://qiserver.ugr.es/cod/1546376.cif
http://qiserver.ugr.es/cod/1546377.cif
http://qiserver.ugr.es/cod/1546378.cif
http://qiserver.ugr.es/cod/1546379.cif
http://qiserver.ugr.es/cod/2002589.cif