CC1=C(C(=O)Nc2ccc(C)cc2C)C(c2cccs2)n2nc(SCc3cccc(C)c3)nc2N1
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?