CC(=O)N1c2c(cc(Br)cc2S(=O)(=O)N2CCN(C(=O)c3ccco3)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?