User-agent: *
Disallow: /administrator/
Disallow: /cache/
Disallow: /components/
Disallow: /images/
Disallow: /includes/
Disallow: /installation/
Disallow: /language/
Disallow: /libraries/
Disallow: /media/
Disallow: /modules/
Disallow: /plugins/
Disallow: /templates/
Disallow: /tmp/
Disallow: /xmlrpc/

User-agent: sitemap
Allow: /index.php?option=com_xmap&sitemap=4&view=xml
Allow: /

User-agent: Googlebot
Allow: /

User-agent: Adsbot-Google
Allow: /

User-agent: Mediapartners-Google* 
Allow: