Cc1cc(NS(=O)(=O)c2ccc(NC(=O)CN3C(=O)NC(C)(c4ccccc4)C3=O)cc2)nc(C)n1
A rotatable bond is defined as any single non-ring bond, attached to a non-terminal, non-hydrogen atom. Amide C-N bonds are not counted because of their high barrier to rotation.  How many rotatable bonds does the molecule have?