http://qiserver.ugr.es/cod/1548340.cif
http://qiserver.ugr.es/cod/1548341.cif
http://qiserver.ugr.es/cod/1548342.cif
http://qiserver.ugr.es/cod/1548343.cif
http://qiserver.ugr.es/cod/1548581.cif