CC1=C(C(=O)Nc2cc(-c3cccc(F)c3)[nH]n2)C2(CCCCC2)OC1=O
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?