C=C1CCN([C@@H](CC(C)C)C(=O)NCc2ccc(Cl)c(Cl)c2)S(=O)(=O)c2ccccc21
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?