CC1(C)CC(=O)C2(CC(CSc3ccccc3)C(CS(=O)(=O)c3ccccc3)C2)C(=O)C1
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?