http://qiserver.ugr.es/cod/1527639.cif
http://qiserver.ugr.es/cod/1541634.cif
http://qiserver.ugr.es/cod/1541680.cif
http://qiserver.ugr.es/cod/1541681.cif
http://qiserver.ugr.es/cod/1541682.cif
http://qiserver.ugr.es/cod/1541683.cif