COc1cc2nc(N(CCCN(C)C)C(=O)c3ccc(S(=O)(=O)N4CCc5ccccc54)cc3)sc2cc1OC.Cl
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?