COc1ccc(CC(=O)Nc2ccc3nc(Nc4cccc(Cl)c4)cc(C)c3c2)cc1OC
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?