http://qiserver.ugr.es/cod/1522558.cif
http://qiserver.ugr.es/cod/1523758.cif
http://qiserver.ugr.es/cod/1527060.cif
http://qiserver.ugr.es/cod/1527874.cif
http://qiserver.ugr.es/cod/1527875.cif
http://qiserver.ugr.es/cod/1527876.cif
http://qiserver.ugr.es/cod/1527877.cif