http://qiserver.ugr.es/cod/1509407.cif
http://qiserver.ugr.es/cod/1539766.cif
http://qiserver.ugr.es/cod/1540312.cif
http://qiserver.ugr.es/cod/1540313.cif
http://qiserver.ugr.es/cod/1541140.cif
http://qiserver.ugr.es/cod/1541141.cif