CC1CCC2C(=O)N3C(CCC(C)[C@@H]3c3cccc(N4CCOCC4)c3)C(=O)N2C1c1cccc(Br)c1
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?