COc1cc(/C=C2\SC(=S)N(CCC(=O)NCCc3ccccc3)C2=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?