CCn1cc(C(=O)NCCc2ccc(Cl)cc2)c(=O)c2cc(S(=O)(=O)N3CCc4ccccc4C3)ccc21
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?