COC(=O)[C@H](CC(C)C)NS(=O)(=O)N(Cc1ccccc1)[C@@H](CC(C)C)C(=O)OC
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?