CCOC(=O)N1C(=O)[C@@](c2ccc(Cl)cc2)(C(C)C)N1C(=O)OCC
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?