http://qiserver.ugr.es/cod/1514015.cif
http://qiserver.ugr.es/cod/1531441.cif
http://qiserver.ugr.es/cod/1531444.cif
http://qiserver.ugr.es/cod/1531579.cif
http://qiserver.ugr.es/cod/1531783.cif