CC(=O)[C@]1(O)CCC2C3CC(C)C4=CC(=O)C=CC4(C)[C@@]3(F)C(O)C[C@]21C
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?