http://qiserver.ugr.es/cod/2300515.cif
http://qiserver.ugr.es/cod/2300553.cif
http://qiserver.ugr.es/cod/2300582.cif
http://qiserver.ugr.es/cod/2300630.cif
http://qiserver.ugr.es/cod/9009659.cif
http://qiserver.ugr.es/cod/9012000.cif