http://qiserver.ugr.es/cod/1534304.cif
http://qiserver.ugr.es/cod/1534305.cif
http://qiserver.ugr.es/cod/1534306.cif
http://qiserver.ugr.es/cod/1534307.cif
http://qiserver.ugr.es/cod/1537390.cif
http://qiserver.ugr.es/cod/1537391.cif