Cc1ccc(S(=O)(=O)c2c(N)n(NC(=O)C3CC3)c3nc4ccccc4nc23)cc1
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?