$VAR1 = {
          'FN' => 'Fee',
          'AGENT' => {
                       'FN' => 'Fie',
                       'AGENT' => {
                                    'FN' => 'Foe',
                                    'AGENT' => {
                                                 'FN' => 'Fum'
                                               }
                                  }
                     }
        };

what was wanted: Fum