Cc1[nH]c(C)c(S(=O)(=O)Nc2cccc(Cl)c2C)c1C(=O)N1CCCC1
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?