COCCCNC(=O)Cn1cc(/C=C2\C(=O)NC(=O)N(c3ccccc3F)C2=O)c2ccccc21
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?