http://qiserver.ugr.es/cod/1501609.cif
http://qiserver.ugr.es/cod/1501610.cif
http://qiserver.ugr.es/cod/1501611.cif
http://qiserver.ugr.es/cod/1501612.cif
http://qiserver.ugr.es/cod/1501613.cif
http://qiserver.ugr.es/cod/1501614.cif