Cc1ccc(CNS(=O)(=O)c2cc3[nH]c(=O)c(=O)[nH]c3cc2C)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?