Cc1ccc(NC(=O)c2cc(S(=O)(=O)Nc3n[nH]c(=O)n3-c3ccccc3)c(S)cc2Cl)cc1
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?