COc1cc(C(=O)NC(=S)Nc2ccc3c(c2)C(=O)N(C)C3=O)cc(OC)c1OC
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?