CC(=O)OCC(=O)C1(O)CCC2C3CC(F)C4=CC(=O)CCC4(C)C3C(=O)CC21C
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?