http://qiserver.ugr.es/cod/1531378.cif
http://qiserver.ugr.es/cod/1531588.cif
http://qiserver.ugr.es/cod/1531591.cif
http://qiserver.ugr.es/cod/1532155.cif
http://qiserver.ugr.es/cod/1541989.cif