CC(C)n1ncc2c(C(=O)Nc3ccc(S(C)(=O)=O)cc3)cc(C3CC3)nc21
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?