http://qiserver.ugr.es/cod/1509623.cif
http://qiserver.ugr.es/cod/1530264.cif
http://qiserver.ugr.es/cod/1530265.cif
http://qiserver.ugr.es/cod/1530266.cif
http://qiserver.ugr.es/cod/1530267.cif
http://qiserver.ugr.es/cod/1530381.cif
http://qiserver.ugr.es/cod/1530382.cif