CN(C)S(=O)(=O)c1ccc(Cl)c(NC(=O)COC(=O)c2cc(-c3ccccc3)nc3ccccc23)c1
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?