http://qiserver.ugr.es/cod/1000169.cif
http://qiserver.ugr.es/cod/1000170.cif
http://qiserver.ugr.es/cod/1000171.cif
http://qiserver.ugr.es/cod/1000172.cif
http://qiserver.ugr.es/cod/1000173.cif