O=C(O)C(F)(F)F.O=C1C(Cc2ccccc2)Nc2ncnc(N3CCc4ccccc4C3)c2N1Cc1ccc(Br)cc1
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?