http://qiserver.ugr.es/cod/1526781.cif
http://qiserver.ugr.es/cod/1526783.cif
http://qiserver.ugr.es/cod/1526785.cif
http://qiserver.ugr.es/cod/1526787.cif
http://qiserver.ugr.es/cod/1526789.cif
http://qiserver.ugr.es/cod/1526790.cif
http://qiserver.ugr.es/cod/1526791.cif