Problem activating site-import

Hello,

I use wordpress 3.2 (new installation on php 5.2.17)
download and uploaded site import but when I want to activate it, it says :

Plugin could not be activated because it triggered a fatal error.
Parse error: syntax error, unexpected T_STRING in /home/hosten/public_html/articles/wp-content/plugins/site-import/site-import.php on line 12

and here is site-import.php :
<?php
/**
* Plugin Name: Site Import
* Plugin URI: http://zefirstudio.pl/wp-site-import/
* Description: Import posts/items directly from other websites.
* Version: 1.0.1
* Author: Zefir Studio
* Author URI: http://www.zefirstudio.pl/
* License: GPL2
*/

namespace site_import_namespace;

defined(‘ABSPATH’) or die(‘No script kiddies please!’);

add_action(‘admin_init’, ‘site_import_namespace\si_init’);
add_action(‘admin_menu’, ‘site_import_namespace\si_menu’);

function si_init() {
wp_register_style(‘si_styles’, plugins_url(‘css/styles.css’, __FILE__));
wp_register_script(‘si_scripts’, plugins_url(‘js/scripts.js’, __FILE__));
wp_enqueue_style(‘si_styles’);
wp_enqueue_script(‘si_scripts’);
}

function si_menu() {
add_menu_page(‘Site Import’, ‘Site Import’, ‘activate_plugins’, ‘site_import’, ‘site_import_namespace\si_options’);
}

function si_options(){
if(!current_user_can(‘manage_options’))wp_die(__(‘You do not have sufficient permissions to access this page.’));
include ‘admin/admin.php’;
}

include ‘admin/ajax.php’;
include ‘admin/import.php’;

?>

What is the reason and solution?

https://wordpress.org/plugins/site-import/