COC(=O)c1csc([C@@H](OC(=O)[C@H](C)[C@H](CCCC(C)(Cl)Cl)OC(=O)c2csc([C@H](O)CO)n2)C(C)C)n1
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?