http://qiserver.ugr.es/cod/1532447.cif
http://qiserver.ugr.es/cod/9009418.cif
http://qiserver.ugr.es/cod/9009419.cif
http://qiserver.ugr.es/cod/9009420.cif
http://qiserver.ugr.es/cod/9009421.cif
http://qiserver.ugr.es/cod/9009422.cif
http://qiserver.ugr.es/cod/9015642.cif