COc1cc(-c2cc(C(=O)Nc3cc(S(=O)(=O)N4CCOCC4)ccc3C)c3ccccc3n2)cc(OC)c1OC
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?