Cc1ccc(S(=O)(=O)N2CCN(CC(=O)Nc3ccc4c(c3)CCC4)CC2)cc1C
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?