CCCCN(C)c1nc2c(S(=O)(=O)c3ccc(CC)cc3)nnn2c2ccc(Cl)cc12
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?