CC(C)(C)C1CCC(NC(=O)c2cnn3c2NC(=C2CC2)C=C3C(F)F)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?