http://qiserver.ugr.es/cod/1534646.cif
http://qiserver.ugr.es/cod/1535227.cif
http://qiserver.ugr.es/cod/2002305.cif
http://qiserver.ugr.es/cod/2002306.cif
http://qiserver.ugr.es/cod/9012337.cif
http://qiserver.ugr.es/cod/9012338.cif