http://qiserver.ugr.es/cod/1001799.cif
http://qiserver.ugr.es/cod/1001801.cif
http://qiserver.ugr.es/cod/1530434.cif
http://qiserver.ugr.es/cod/1530501.cif
http://qiserver.ugr.es/cod/1531746.cif