CC12CC(c3ccccc3O1)N(C(=O)c1ccc(Br)o1)C(=O)N2c1ccccc1
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?