http://qiserver.ugr.es/cod/1510663.cif
http://qiserver.ugr.es/cod/1511629.cif
http://qiserver.ugr.es/cod/1523235.cif
http://qiserver.ugr.es/cod/1524446.cif
http://qiserver.ugr.es/cod/1540225.cif