http://qiserver.ugr.es/cod/1535025.cif
http://qiserver.ugr.es/cod/1535027.cif
http://qiserver.ugr.es/cod/1535763.cif
http://qiserver.ugr.es/cod/1537159.cif
http://qiserver.ugr.es/cod/1537160.cif