COc1ccccc1CN1C[C@@H]2C[C@@H](c3ccc(Cl)cc3)N3CCC[C@@]23C1=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?