COc1ccc(OC)c(CNC(=O)c2cc(=O)[nH]c3ccc(S(=O)(=O)N4CCCCC4C)cc23)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?