http://qiserver.ugr.es/cod/4343818.cif
http://qiserver.ugr.es/cod/4343819.cif
http://qiserver.ugr.es/cod/4343820.cif
http://qiserver.ugr.es/cod/4344219.cif
http://qiserver.ugr.es/cod/4344351.cif
http://qiserver.ugr.es/cod/4344359.cif
http://qiserver.ugr.es/cod/4344503.cif