C[C@H](NC(=O)c1cc2cc(Cl)ccc2n1C)C(=O)N1CCC[C@H]1C(=O)O
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?