Can you help me find a fitting web Content Management System?

What is important is
that it separates design from content,
that it stores the content in a relational database (mysql preferred), that it can manage multiple websites
that it supports multilingual websites
and most importantly, that it does not restrict me in template design, e.g. I do not want to be stuck with premade structures like this, but I want to be able to make things like this.
dear top gear fluther, can you help?