O=C(COc1ccc(OCC(=O)N2C(=O)CC(=O)N(c3ccccc3)C2=S)cc1)N1C(=O)CC(=O)N(c2ccccc2)C1=S
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?