http://qiserver.ugr.es/cod/1509270.cif
http://qiserver.ugr.es/cod/1509405.cif
http://qiserver.ugr.es/cod/1537267.cif
http://qiserver.ugr.es/cod/1537389.cif
http://qiserver.ugr.es/cod/1539091.cif