CC(=O)N1c2ccc(S(=O)(=O)N3CCC(C(=O)Nc4cccc(C)c4C)CC3)cc2CC1C
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?