http://qiserver.ugr.es/cod/1000243.cif
http://qiserver.ugr.es/cod/1000244.cif
http://qiserver.ugr.es/cod/1000245.cif
http://qiserver.ugr.es/cod/1000246.cif
http://qiserver.ugr.es/cod/1523947.cif