COc1cccc2c1OCC([C@@H]1C[C@H]3CN(Cc4cccc(Cl)c4)C(=O)[C@]34CCCN14)=C2
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?